120870021481 has 32 divisors (see below), whose sum is σ = 138239861760. Its totient is φ = 104685081600.

The previous prime is 120870021379. The next prime is 120870021527. The reversal of 120870021481 is 184120078021.

It is not a de Polignac number, because 120870021481 - 2²¹ = 120867924329 is a prime.

It is a super-2 number, since 2×120870021481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120870021581) 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, 7062771 + ... + 7079863.

It is an arithmetic number, because the mean of its divisors is an integer number (4319995680).

Almost surely, 2^120870021481 is an apocalyptic number.

120870021481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120870021481 is a deficient number, since it is larger than the sum of its proper divisors (17369840279).

120870021481 is a wasteful number, since it uses less digits than its factorization.

120870021481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17457.

The product of its (nonzero) digits is 7168, while the sum is 34.

The spelling of 120870021481 in words is "one hundred twenty billion, eight hundred seventy million, twenty-one thousand, four hundred eighty-one".