102011021220121 has 8 divisors (see below), whose sum is σ = 110112913862784. Its totient is φ = 93945541578960.

The previous prime is 102011021220113. The next prime is 102011021220137. The reversal of 102011021220121 is 121022120110201.

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 102011021220121 - 2³ = 102011021220113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102011021220095 and 102011021220104.

It is not an unprimeable number, because it can be changed into a prime (102011021220421) 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, 9103244551 + ... + 9103255756.

It is an arithmetic number, because the mean of its divisors is an integer number (13764114232848).

Almost surely, 2^{102011021220121} is an apocalyptic number.

It is an amenable number.

102011021220121 is a deficient number, since it is larger than the sum of its proper divisors (8101892642663).

102011021220121 is a wasteful number, since it uses less digits than its factorization.

102011021220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18206500751.

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

Adding to 102011021220121 its reverse (121022120110201), we get a palindrome (223033141330322).

The spelling of 102011021220121 in words is "one hundred two trillion, eleven billion, twenty-one million, two hundred twenty thousand, one hundred twenty-one".