102001211012 has 24 divisors (see below), whose sum is σ = 189981554616. Its totient is φ = 47751856128.

The previous prime is 102001210981. The next prime is 102001211017. The reversal of 102001211012 is 210112100201.

It can be written as a sum of positive squares in 4 ways, for example, as 5226711616 + 96774499396 = 72296^2 + 311086^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102001210984 and 102001211002.

It is not an unprimeable number, because it can be changed into a prime (102001211017) 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, 3872933 + ... + 3899180.

It is an arithmetic number, because the mean of its divisors is an integer number (7915898109).

Almost surely, 2^102001211012 is an apocalyptic number.

It is an amenable number.

102001211012 is a deficient number, since it is larger than the sum of its proper divisors (87980343604).

102001211012 is a wasteful number, since it uses less digits than its factorization.

102001211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7772327 (or 7772325 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102001211012 its reverse (210112100201), we get a palindrome (312113311213).

The spelling of 102001211012 in words is "one hundred two billion, one million, two hundred eleven thousand, twelve".