120110221111221 has 20 divisors (see below), whose sum is σ = 195735175145664. Its totient is φ = 72794073400200.

The previous prime is 120110221111211. The next prime is 120110221111229. The reversal of 120110221111221 is 122111122011021.

It is a happy number.

120110221111221 is a `hidden beast` number, since 1 + 2 + 0 + 110 + 221 + 111 + 221 = 666.

It is not a de Polignac number, because 120110221111221 - 2¹⁰ = 120110221110197 is a prime.

It is a super-2 number, since 2×120110221111221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120110221111194 and 120110221111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120110221111229) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 67401918925 + ... + 67401920706.

Almost surely, 2^{120110221111221} is an apocalyptic number.

120110221111221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120110221111221 is a deficient number, since it is larger than the sum of its proper divisors (75624954034443).

120110221111221 is a wasteful number, since it uses less digits than its factorization.

120110221111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134803839654 (or 134803839645 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 120110221111221 its reverse (122111122011021), we get a palindrome (242221343122242).

The spelling of 120110221111221 in words is "one hundred twenty trillion, one hundred ten billion, two hundred twenty-one million, one hundred eleven thousand, two hundred twenty-one".