212000400402 has 64 divisors (see below), whose sum is σ = 491408544000. Its totient is φ = 59717689344.

The previous prime is 212000400401. The next prime is 212000400457. The reversal of 212000400402 is 204004000212.

212000400402 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212000400401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8415858 + ... + 8441010.

It is an arithmetic number, because the mean of its divisors is an integer number (7678258500).

Almost surely, 2^212000400402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212000400402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245704272000).

212000400402 is an abundant number, since it is smaller than the sum of its proper divisors (279408143598).

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

212000400402 is a wasteful number, since it uses less digits than its factorization.

212000400402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27987.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 212000400402 its reverse (204004000212), we get a palindrome (416004400614).

The spelling of 212000400402 in words is "two hundred twelve billion, four hundred thousand, four hundred two".