120121222001 has 32 divisors (see below), whose sum is σ = 139892728320. Its totient is φ = 101997100800.

The previous prime is 120121221989. The next prime is 120121222027. The reversal of 120121222001 is 100222121021.

It is a cyclic number.

It is not a de Polignac number, because 120121222001 - 2¹⁸ = 120120959857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120121222201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4705865 + ... + 4731321.

It is an arithmetic number, because the mean of its divisors is an integer number (4371647760).

Almost surely, 2^120121222001 is an apocalyptic number.

120121222001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120121222001 is a deficient number, since it is larger than the sum of its proper divisors (19771506319).

120121222001 is a wasteful number, since it uses less digits than its factorization.

120121222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25805.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120121222001 its reverse (100222121021), we get a palindrome (220343343022).

It can be divided in two parts, 120 and 121222001, that added together give a palindrome (121222121).

The spelling of 120121222001 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred twenty-two thousand, one".