120021132121 has 4 divisors (see below), whose sum is σ = 130932144144. Its totient is φ = 109110120100.

The previous prime is 120021132103. The next prime is 120021132197. The reversal of 120021132121 is 121231120021.

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 a de Polignac number, because none of the positive numbers 2^k-120021132121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120021132095 and 120021132104.

It is not an unprimeable number, because it can be changed into a prime (120021133121) 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, 5455505995 + ... + 5455506016.

It is an arithmetic number, because the mean of its divisors is an integer number (32733036036).

Almost surely, 2^120021132121 is an apocalyptic number.

120021132121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120021132121 is a deficient number, since it is larger than the sum of its proper divisors (10911012023).

120021132121 is a wasteful number, since it uses less digits than its factorization.

120021132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10911012022.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 120021132121 its reverse (121231120021), we get a palindrome (241252252142).

The spelling of 120021132121 in words is "one hundred twenty billion, twenty-one million, one hundred thirty-two thousand, one hundred twenty-one".