102121001121 has 32 divisors (see below), whose sum is σ = 151928794368. Its totient is φ = 60683110400.

The previous prime is 102121001113. The next prime is 102121001123. The reversal of 102121001121 is 121100121201.

It is a cyclic number.

It is not a de Polignac number, because 102121001121 - 2³ = 102121001113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102121001097 and 102121001106.

It is not an unprimeable number, because it can be changed into a prime (102121001123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 312516 + ... + 549461.

It is an arithmetic number, because the mean of its divisors is an integer number (4747774824).

Almost surely, 2^102121001121 is an apocalyptic number.

It is an amenable number.

102121001121 is a deficient number, since it is larger than the sum of its proper divisors (49807793247).

102121001121 is a wasteful number, since it uses less digits than its factorization.

102121001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862121.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102121001121 its reverse (121100121201), we get a palindrome (223221122322).

The spelling of 102121001121 in words is "one hundred two billion, one hundred twenty-one million, one thousand, one hundred twenty-one".