102121021020111 has 8 divisors (see below), whose sum is σ = 136484785023024. Its totient is φ = 67918968848640.

The previous prime is 102121021020103. The next prime is 102121021020169. The reversal of 102121021020111 is 111020120121201.

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 102121021020111 - 2³ = 102121021020103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121021020211) 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, 40427956386 + ... + 40427958911.

It is an arithmetic number, because the mean of its divisors is an integer number (17060598127878).

Almost surely, 2^{102121021020111} is an apocalyptic number.

102121021020111 is a deficient number, since it is larger than the sum of its proper divisors (34363764002913).

102121021020111 is an equidigital number, since it uses as much as digits as its factorization.

102121021020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80855915721.

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

Adding to 102121021020111 its reverse (111020120121201), we get a palindrome (213141141141312).

The spelling of 102121021020111 in words is "one hundred two trillion, one hundred twenty-one billion, twenty-one million, twenty thousand, one hundred eleven".