102101012121021 has 8 divisors (see below), whose sum is σ = 136136859039840. Its totient is φ = 68066253308112.

The previous prime is 102101012120953. The next prime is 102101012121029. The reversal of 102101012121021 is 120121210101201.

It is a happy number.

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

It is not a de Polignac number, because 102101012121021 - 2¹⁸ = 102101011858877 is a prime.

It is a super-2 number, since 2×102101012121021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101012121029) 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, 271807506 + ... + 272182883.

It is an arithmetic number, because the mean of its divisors is an integer number (17017107379980).

Almost surely, 2^{102101012121021} is an apocalyptic number.

It is an amenable number.

102101012121021 is a deficient number, since it is larger than the sum of its proper divisors (34035846918819).

102101012121021 is an equidigital number, since it uses as much as digits as its factorization.

102101012121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544052955.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102101012121021 its reverse (120121210101201), we get a palindrome (222222222222222).

The spelling of 102101012121021 in words is "one hundred two trillion, one hundred one billion, twelve million, one hundred twenty-one thousand, twenty-one".