102100001231 has 16 divisors (see below), whose sum is σ = 103491511200. Its totient is φ = 100717613568.

The previous prime is 102100001221. The next prime is 102100001309. The reversal of 102100001231 is 132100001201.

It is a cyclic number.

It is not a de Polignac number, because 102100001231 - 2¹⁸ = 102099739087 is a prime.

It is a super-2 number, since 2×102100001231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102100001221) 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, 42952115 + ... + 42954491.

It is an arithmetic number, because the mean of its divisors is an integer number (6468219450).

Almost surely, 2^102100001231 is an apocalyptic number.

102100001231 is a deficient number, since it is larger than the sum of its proper divisors (1391509969).

102100001231 is a wasteful number, since it uses less digits than its factorization.

102100001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4058.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 102100001231 its reverse (132100001201), we get a palindrome (234200002432).

The spelling of 102100001231 in words is "one hundred two billion, one hundred million, one thousand, two hundred thirty-one".