120020021001 has 32 divisors (see below), whose sum is σ = 180498032640. Its totient is φ = 78804910800.

The previous prime is 120020020969. The next prime is 120020021057. The reversal of 120020021001 is 100120020021.

It is not a de Polignac number, because 120020021001 - 2⁵ = 120020020969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (120020025001) 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, 1852566 + ... + 1916256.

It is an arithmetic number, because the mean of its divisors is an integer number (5640563520).

Almost surely, 2^120020021001 is an apocalyptic number.

It is an amenable number.

120020021001 is a deficient number, since it is larger than the sum of its proper divisors (60478011639).

120020021001 is an equidigital number, since it uses as much as digits as its factorization.

120020021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64754 (or 64748 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 120020021001 its reverse (100120020021), we get a palindrome (220140041022).

The spelling of 120020021001 in words is "one hundred twenty billion, twenty million, twenty-one thousand, one".