211020001221200 has 60 divisors (see below), whose sum is σ = 507062563091520. Its totient is φ = 84393513886080.

The previous prime is 211020001221137. The next prime is 211020001221223. The reversal of 211020001221200 is 2122100020112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42936920 + ... + 47598519.

It is an arithmetic number, because the mean of its divisors is an integer number (8451042718192).

Almost surely, 2^{211020001221200} is an apocalyptic number.

211020001221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211020001221200 is an abundant number, since it is smaller than the sum of its proper divisors (296042561870320).

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

211020001221200 is a wasteful number, since it uses less digits than its factorization.

211020001221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90541284 (or 90541273 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211020001221200 its reverse (2122100020112), we get a palindrome (213142101241312).

The spelling of 211020001221200 in words is "two hundred eleven trillion, twenty billion, one million, two hundred twenty-one thousand, two hundred".