102001021121 has 8 divisors (see below), whose sum is σ = 103286743200. Its totient is φ = 100718402400.

The previous prime is 102001021099. The next prime is 102001021123. The reversal of 102001021121 is 121120100201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102001021121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102001021123) 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, 709655 + ... + 841196.

It is an arithmetic number, because the mean of its divisors is an integer number (12910842900).

Almost surely, 2^102001021121 is an apocalyptic number.

It is an amenable number.

102001021121 is a deficient number, since it is larger than the sum of its proper divisors (1285722079).

102001021121 is an equidigital number, since it uses as much as digits as its factorization.

102001021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551679.

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

Adding to 102001021121 its reverse (121120100201), we get a palindrome (223121121322).

The spelling of 102001021121 in words is "one hundred two billion, one million, twenty-one thousand, one hundred twenty-one".