102311121021 has 8 divisors (see below), whose sum is σ = 140101715424. Its totient is φ = 66363970320.

The previous prime is 102311120959. The next prime is 102311121037. The reversal of 102311121021 is 120121113201.

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

It is not a de Polignac number, because 102311121021 - 2⁶ = 102311120957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102311121041) 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, 460860795 + ... + 460861016.

It is an arithmetic number, because the mean of its divisors is an integer number (17512714428).

Almost surely, 2^102311121021 is an apocalyptic number.

It is an amenable number.

102311121021 is a deficient number, since it is larger than the sum of its proper divisors (37790594403).

102311121021 is an equidigital number, since it uses as much as digits as its factorization.

102311121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921721851.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 102311121021 its reverse (120121113201), we get a palindrome (222432234222).

The spelling of 102311121021 in words is "one hundred two billion, three hundred eleven million, one hundred twenty-one thousand, twenty-one".