120202021221111 has 40 divisors (see below), whose sum is σ = 184386159874224. Its totient is φ = 78008409607680.

The previous prime is 120202021221041. The next prime is 120202021221173. The reversal of 120202021221111 is 111122120202021.

120202021221111 is a `hidden beast` number, since 120 + 202 + 0 + 212 + 21 + 111 = 666.

It is not a de Polignac number, because 120202021221111 - 2¹⁸ = 120202020958967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120202021221311) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 124920045 + ... + 125878598.

Almost surely, 2^{120202021221111} is an apocalyptic number.

120202021221111 is a deficient number, since it is larger than the sum of its proper divisors (64184138653113).

120202021221111 is an equidigital number, since it uses as much as digits as its factorization.

120202021221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250798813 (or 250798804 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 120202021221111 its reverse (111122120202021), we get a palindrome (231324141423132).

The spelling of 120202021221111 in words is "one hundred twenty trillion, two hundred two billion, twenty-one million, two hundred twenty-one thousand, one hundred eleven".