102121022012021 has 8 divisors (see below), whose sum is σ = 102530010439680. Its totient is φ = 101712372576192.

The previous prime is 102121022011949. The next prime is 102121022012041. The reversal of 102121022012021 is 120210220121201.

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

It is a cyclic number.

It is not a de Polignac number, because 102121022012021 - 2³⁴ = 102103842142837 is a prime.

It is a super-2 number, since 2×102121022012021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121022012041) 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, 84144245 + ... + 85349258.

It is an arithmetic number, because the mean of its divisors is an integer number (12816251304960).

Almost surely, 2^{102121022012021} is an apocalyptic number.

It is an amenable number.

102121022012021 is a deficient number, since it is larger than the sum of its proper divisors (408988427659).

102121022012021 is a wasteful number, since it uses less digits than its factorization.

102121022012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169495915.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102121022012021 its reverse (120210220121201), we get a palindrome (222331242133222).

The spelling of 102121022012021 in words is "one hundred two trillion, one hundred twenty-one billion, twenty-two million, twelve thousand, twenty-one".