21200210012212 has 72 divisors (see below), whose sum is σ = 47081942863200. Its totient is φ = 8259654191040.

The previous prime is 21200210012209. The next prime is 21200210012237. The reversal of 21200210012212 is 21221001200212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188643414 + ... + 188755762.

It is an arithmetic number, because the mean of its divisors is an integer number (653915873100).

Almost surely, 2^{21200210012212} is an apocalyptic number.

21200210012212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21200210012212 is an abundant number, since it is smaller than the sum of its proper divisors (25881732850988).

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

21200210012212 is a wasteful number, since it uses less digits than its factorization.

21200210012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199901 (or 199892 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21200210012212 its reverse (21221001200212), we get a palindrome (42421211212424).

The spelling of 21200210012212 in words is "twenty-one trillion, two hundred billion, two hundred ten million, twelve thousand, two hundred twelve".