420651206121 has 8 divisors (see below), whose sum is σ = 561549770560. Its totient is φ = 280093389552.

The previous prime is 420651206083. The next prime is 420651206123. The reversal of 420651206121 is 121602156024.

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

It is not a de Polignac number, because 420651206121 - 2²⁵ = 420617651689 is a prime.

It is a super-2 number, since 2×420651206121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420651206123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85184086 + ... + 85189023.

It is an arithmetic number, because the mean of its divisors is an integer number (70193721320).

Almost surely, 2^420651206121 is an apocalyptic number.

It is an amenable number.

420651206121 is a deficient number, since it is larger than the sum of its proper divisors (140898564439).

420651206121 is a wasteful number, since it uses less digits than its factorization.

420651206121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170373935.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 420651206121 in words is "four hundred twenty billion, six hundred fifty-one million, two hundred six thousand, one hundred twenty-one".