120121010220111 has 4 divisors (see below), whose sum is σ = 160161346960152. Its totient is φ = 80080673480072.

The previous prime is 120121010220041. The next prime is 120121010220119. The reversal of 120121010220111 is 111022010121021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120121010220111 - 2¹¹ = 120121010218063 is a prime.

It is a super-2 number, since 2×120121010220111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121010220119) 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, 20020168370016 + ... + 20020168370021.

It is an arithmetic number, because the mean of its divisors is an integer number (40040336740038).

Almost surely, 2^{120121010220111} is an apocalyptic number.

120121010220111 is a deficient number, since it is larger than the sum of its proper divisors (40040336740041).

120121010220111 is an equidigital number, since it uses as much as digits as its factorization.

120121010220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40040336740040.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 120121010220111 its reverse (111022010121021), we get a palindrome (231143020341132).

The spelling of 120121010220111 in words is "one hundred twenty trillion, one hundred twenty-one billion, ten million, two hundred twenty thousand, one hundred eleven".