201012221101122 has 48 divisors (see below), whose sum is σ = 461147030281080. Its totient is φ = 63062473453056.

The previous prime is 201012221101099. The next prime is 201012221101147. The reversal of 201012221101122 is 221101122210102.

It can be written as a sum of positive squares in 4 ways, for example, as 191435975209521 + 9576245891601 = 13836039^2 + 3094551^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201012221101095 and 201012221101104.

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, 135829704 + ... + 137301612.

Almost surely, 2^{201012221101122} is an apocalyptic number.

201012221101122 is an abundant number, since it is smaller than the sum of its proper divisors (260134809179958).

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

201012221101122 is a wasteful number, since it uses less digits than its factorization.

201012221101122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918227 (or 1918224 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201012221101122 its reverse (221101122210102), we get a palindrome (422113343311224).

The spelling of 201012221101122 in words is "two hundred one trillion, twelve billion, two hundred twenty-one million, one hundred one thousand, one hundred twenty-two".