102311021321021 has 16 divisors (see below), whose sum is σ = 110442914069760. Its totient is φ = 94486230558720.

The previous prime is 102311021320997. The next prime is 102311021321099. The reversal of 102311021321021 is 120123120113201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102311021321021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102311021320984 and 102311021321002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102311021321521) 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, 32033021 + ... + 35081853.

It is an arithmetic number, because the mean of its divisors is an integer number (6902682129360).

Almost surely, 2^{102311021321021} is an apocalyptic number.

It is an amenable number.

102311021321021 is a deficient number, since it is larger than the sum of its proper divisors (8131892748739).

102311021321021 is a wasteful number, since it uses less digits than its factorization.

102311021321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099196.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 102311021321021 its reverse (120123120113201), we get a palindrome (222434141434222).

The spelling of 102311021321021 in words is "one hundred two trillion, three hundred eleven billion, twenty-one million, three hundred twenty-one thousand, twenty-one".