120000212111021 has 4 divisors (see below), whose sum is σ = 130909322302944. Its totient is φ = 109091101919100.

The previous prime is 120000212111011. The next prime is 120000212111051. The reversal of 120000212111021 is 120111212000021.

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 120000212111021 - 2²² = 120000207916717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120000212110987 and 120000212111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120000212111011) 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, 5454555095945 + ... + 5454555095966.

It is an arithmetic number, because the mean of its divisors is an integer number (32727330575736).

Almost surely, 2^{120000212111021} is an apocalyptic number.

120000212111021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120000212111021 is a deficient number, since it is larger than the sum of its proper divisors (10909110191923).

120000212111021 is a wasteful number, since it uses less digits than its factorization.

120000212111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10909110191922.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120000212111021 its reverse (120111212000021), we get a palindrome (240111424111042).

The spelling of 120000212111021 in words is "one hundred twenty trillion, two hundred twelve million, one hundred eleven thousand, twenty-one".