102000002121021 has 32 divisors (see below), whose sum is σ = 144246332805120. Its totient is φ = 63998174912000.

The previous prime is 102000002121007. The next prime is 102000002121029. The reversal of 102000002121021 is 120121200000201.

It is a cyclic number.

It is not a de Polignac number, because 102000002121021 - 2⁶ = 102000002120957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102000002120988 and 102000002121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102000002121029) 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, 8316390 + ... + 16527623.

It is an arithmetic number, because the mean of its divisors is an integer number (4507697900160).

Almost surely, 2^{102000002121021} is an apocalyptic number.

It is an amenable number.

102000002121021 is a deficient number, since it is larger than the sum of its proper divisors (42246330684099).

102000002121021 is a wasteful number, since it uses less digits than its factorization.

102000002121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24845237.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102000002121021 its reverse (120121200000201), we get a palindrome (222121202121222).

The spelling of 102000002121021 in words is "one hundred two trillion, two million, one hundred twenty-one thousand, twenty-one".