201211012101122 has 4 divisors (see below), whose sum is σ = 301816518151686. Its totient is φ = 100605506050560.

The previous prime is 201211012101079. The next prime is 201211012101157. The reversal of 201211012101122 is 221101210112102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 129250045454761 + 71960966646361 = 11368819^2 + 8482981^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 201211012101122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50302753025279 + ... + 50302753025282.

Almost surely, 2^{201211012101122} is an apocalyptic number.

201211012101122 is a deficient number, since it is larger than the sum of its proper divisors (100605506050564).

201211012101122 is a wasteful number, since it uses less digits than its factorization.

201211012101122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100605506050563.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201211012101122 its reverse (221101210112102), we get a palindrome (422312222213224).

The spelling of 201211012101122 in words is "two hundred one trillion, two hundred eleven billion, twelve million, one hundred one thousand, one hundred twenty-two".