421015212112 has 40 divisors (see below), whose sum is σ = 903154774752. Its totient is φ = 188514268800.

The previous prime is 421015211971. The next prime is 421015212113. The reversal of 421015212112 is 211212510124.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421015212113) 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, 17839939 + ... + 17863522.

Almost surely, 2^421015212112 is an apocalyptic number.

It is an amenable number.

421015212112 is an abundant number, since it is smaller than the sum of its proper divisors (482139562640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421015212112 is a wasteful number, since it uses less digits than its factorization.

421015212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35703547 (or 35703541 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 22.

Adding to 421015212112 its reverse (211212510124), we get a palindrome (632227722236).

The spelling of 421015212112 in words is "four hundred twenty-one billion, fifteen million, two hundred twelve thousand, one hundred twelve".