120100021021 has 8 divisors (see below), whose sum is σ = 121542340320. Its totient is φ = 118663625808.

The previous prime is 120100020979. The next prime is 120100021031. The reversal of 120100021021 is 120120001021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120100021021 - 2³⁵ = 85740282653 is a prime.

It is a super-3 number, since 3×120100021021³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120100020989 and 120100021007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120100021031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1440226 + ... + 1521331.

It is an arithmetic number, because the mean of its divisors is an integer number (15192792540).

Almost surely, 2^120100021021 is an apocalyptic number.

It is an amenable number.

120100021021 is a deficient number, since it is larger than the sum of its proper divisors (1442319299).

120100021021 is a wasteful number, since it uses less digits than its factorization.

120100021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962043.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 120100021021 its reverse (120120001021), we get a palindrome (240220022042).

The spelling of 120100021021 in words is "one hundred twenty billion, one hundred million, twenty-one thousand, twenty-one".