2120100110021 has 8 divisors (see below), whose sum is σ = 2176233127488. Its totient is φ = 2064177724000.

The previous prime is 2120100109991. The next prime is 2120100110041. The reversal of 2120100110021 is 1200110010212.

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 2120100110021 - 2⁶ = 2120100109957 is a prime.

It is a super-2 number, since 2×2120100110021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2120100109984 and 2120100110011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120100110041) 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, 52637465 + ... + 52677726.

It is an arithmetic number, because the mean of its divisors is an integer number (272029140936).

Almost surely, 2^{2120100110021} is an apocalyptic number.

It is an amenable number.

2120100110021 is a deficient number, since it is larger than the sum of its proper divisors (56133017467).

2120100110021 is a wasteful number, since it uses less digits than its factorization.

2120100110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105315723.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2120100110021 its reverse (1200110010212), we get a palindrome (3320210120233).

The spelling of 2120100110021 in words is "two trillion, one hundred twenty billion, one hundred million, one hundred ten thousand, twenty-one".