1021102111121 has 4 divisors (see below), whose sum is σ = 1021217277552. Its totient is φ = 1020986944692.

The previous prime is 1021102111111. The next prime is 1021102111153. The reversal of 1021102111121 is 1211112011201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1021102111121 - 2³⁸ = 746224204177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021102111096 and 1021102111105.

It is not an unprimeable number, because it can be changed into a prime (1021102111111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57569915 + ... + 57587648.

It is an arithmetic number, because the mean of its divisors is an integer number (255304319388).

Almost surely, 2^{1021102111121} is an apocalyptic number.

It is an amenable number.

1021102111121 is a deficient number, since it is larger than the sum of its proper divisors (115166431).

1021102111121 is an equidigital number, since it uses as much as digits as its factorization.

1021102111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115166430.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1021102111121 its reverse (1211112011201), we get a palindrome (2232214122322).

The spelling of 1021102111121 in words is "one trillion, twenty-one billion, one hundred two million, one hundred eleven thousand, one hundred twenty-one".