421200121002124 has 6 divisors (see below), whose sum is σ = 737100211753724. Its totient is φ = 210600060501060.

The previous prime is 421200121002121. The next prime is 421200121002149.

421200121002124 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×421200121002124² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421200121002095 and 421200121002104.

It is not an unprimeable number, because it can be changed into a prime (421200121002121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52650015125262 + ... + 52650015125269.

Almost surely, 2^{421200121002124} is an apocalyptic number.

It is an amenable number.

421200121002124 is a deficient number, since it is larger than the sum of its proper divisors (315900090751600).

421200121002124 is a wasteful number, since it uses less digits than its factorization.

421200121002124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105300030250535 (or 105300030250533 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The spelling of 421200121002124 in words is "four hundred twenty-one trillion, two hundred billion, one hundred twenty-one million, two thousand, one hundred twenty-four".