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122072213 = 378633823
BaseRepresentation
bin1110100011010…
…10110010010101
322111200220121002
413101222302111
5222222302323
620040233045
73011411444
oct721526225
9274626532
10122072213
11629a772a
1234a6b785
131c3a11a3
14122d8d5b
15aab4828
hex746ac95

122072213 has 8 divisors (see below), whose sum is σ = 125549568. Its totient is φ = 118604304.

The previous prime is 122072177. The next prime is 122072263. The reversal of 122072213 is 312270221.

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 122072213 - 212 = 122068117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122072263) 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, 30020 + ... + 33842.

It is an arithmetic number, because the mean of its divisors is an integer number (15693696).

Almost surely, 2122072213 is an apocalyptic number.

It is an amenable number.

122072213 is a deficient number, since it is larger than the sum of its proper divisors (3477355).

122072213 is an equidigital number, since it uses as much as digits as its factorization.

122072213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 122072213 is about 11048.6294625171. The cubic root of 122072213 is about 496.0654031102.

The spelling of 122072213 in words is "one hundred twenty-two million, seventy-two thousand, two hundred thirteen".

Divisors: 1 37 863 3823 31931 141451 3299249 122072213