201121101122212 has 18 divisors (see below), whose sum is σ = 357293495504022. Its totient is φ = 99059646812544.

The previous prime is 201121101122203. The next prime is 201121101122233. The reversal of 201121101122212 is 212221101121102.

It is a happy number.

201121101122212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 175191272448256 + 25929828673956 = 13235984^2 + 5092134^2 .

It is a super-2 number, since 2×201121101122212² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201121101122212.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5600369133 + ... + 5600405044.

Almost surely, 2^{201121101122212} is an apocalyptic number.

It is an amenable number.

201121101122212 is a deficient number, since it is larger than the sum of its proper divisors (156172394381810).

201121101122212 is a wasteful number, since it uses less digits than its factorization.

201121101122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11200774315 (or 11200774246 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201121101122212 its reverse (212221101121102), we get a palindrome (413342202243314).

The spelling of 201121101122212 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred one million, one hundred twenty-two thousand, two hundred twelve".