201211012101210 has 32 divisors (see below), whose sum is σ = 482945598267840. Its totient is φ = 53651917757568.

The previous prime is 201211012101157. The next prime is 201211012101233. The reversal of 201211012101210 is 12101210112102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201211012101210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271632472 + ... + 272372211.

It is an arithmetic number, because the mean of its divisors is an integer number (15092049945870).

Almost surely, 2^{201211012101210} is an apocalyptic number.

201211012101210 is an abundant number, since it is smaller than the sum of its proper divisors (281734586166630).

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

201211012101210 is a wasteful number, since it uses less digits than its factorization.

201211012101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544017022.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201211012101210 its reverse (12101210112102), we get a palindrome (213312222213312).

The spelling of 201211012101210 in words is "two hundred one trillion, two hundred eleven billion, twelve million, one hundred one thousand, two hundred ten".