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21003001201 = 713990123311
BaseRepresentation
bin10011100011111000…
…000101110101110001
32000012201212000020101
4103203320011311301
5321003232014301
613352035112401
71342321364440
oct234370056561
960181760211
1021003001201
1189a8712736
1240a1a42701
131c99425b80
1410335b4d57
1582dd41701
hex4e3e05d71

21003001201 has 16 divisors (see below), whose sum is σ = 25853567488. Its totient is φ = 16615368000.

The previous prime is 21003001183. The next prime is 21003001219. The reversal of 21003001201 is 10210030012.

It is an interprime number because it is at equal distance from previous prime (21003001183) and next prime (21003001219).

It is not a de Polignac number, because 21003001201 - 233 = 12413066609 is a prime.

It is a super-2 number, since 2×210030012012 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21003001231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 889336 + ... + 912646.

It is an arithmetic number, because the mean of its divisors is an integer number (1615847968).

Almost surely, 221003001201 is an apocalyptic number.

It is an amenable number.

21003001201 is a deficient number, since it is larger than the sum of its proper divisors (4850566287).

21003001201 is a wasteful number, since it uses less digits than its factorization.

21003001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33232.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 21003001201 its reverse (10210030012), we get a palindrome (31213031213).

The spelling of 21003001201 in words is "twenty-one billion, three million, one thousand, two hundred one".

Divisors: 1 7 13 91 9901 23311 69307 128713 163177 303043 900991 2121301 230802211 1615615477 3000428743 21003001201