102121202011021 has 8 divisors (see below), whose sum is σ = 103074301123200. Its totient is φ = 101168397578160.

The previous prime is 102121202011013. The next prime is 102121202011033. The reversal of 102121202011021 is 120110202121201.

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 102121202011021 - 2³ = 102121202011013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102121202010986 and 102121202011004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121202011001) 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, 72973465 + ... + 74359726.

It is an arithmetic number, because the mean of its divisors is an integer number (12884287640400).

Almost surely, 2^{102121202011021} is an apocalyptic number.

It is an amenable number.

102121202011021 is a deficient number, since it is larger than the sum of its proper divisors (953099112179).

102121202011021 is a wasteful number, since it uses less digits than its factorization.

102121202011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147339659.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102121202011021 its reverse (120110202121201), we get a palindrome (222231404132222).

The spelling of 102121202011021 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred two million, eleven thousand, twenty-one".