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149012221012121 = 369745317889429
BaseRepresentation
bin100001111000011010011100…
…100000000010100010011001
3201112121102120220001002221002
4201320122130200002202121
5124012404012034341441
61244531134100154345
743246530514661315
oct4170323440024231
9645542526032832
10149012221012121
1143530801025695
12148676973989b5
13651ba3b4681bc
1428b23310c2b45
15123623aa43b9b
hex87869c802899

149012221012121 has 8 divisors (see below), whose sum is σ = 149055983960520. Its totient is φ = 148968459940608.

The previous prime is 149012221012063. The next prime is 149012221012147. The reversal of 149012221012121 is 121210122210941.

It can be written as a sum of positive squares in 4 ways, for example, as 290293586521 + 148721927425600 = 538789^2 + 12195160^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149012221012121 - 226 = 149012153903257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149012221012181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167092235 + ... + 167981663.

It is an arithmetic number, because the mean of its divisors is an integer number (18631997995065).

Almost surely, 2149012221012121 is an apocalyptic number.

It is an amenable number.

149012221012121 is a deficient number, since it is larger than the sum of its proper divisors (43762948399).

149012221012121 is an equidigital number, since it uses as much as digits as its factorization.

149012221012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938443.

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 149012221012121 in words is "one hundred forty-nine trillion, twelve billion, two hundred twenty-one million, twelve thousand, one hundred twenty-one".

Divisors: 1 3697 45317 889429 167536949 3288219013 40306253993 149012221012121