1011100211212 has 36 divisors (see below), whose sum is σ = 2216642776320. Its totient is φ = 399995686944.

The previous prime is 1011100211203. The next prime is 1011100211237. The reversal of 1011100211212 is 2121120011101.

It is a happy number.

It is a super-2 number, since 2×1011100211212² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1011100211192 and 1011100211201.

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, 198408012 + ... + 198413107.

Almost surely, 2^{1011100211212} is an apocalyptic number.

It is an amenable number.

1011100211212 is an abundant number, since it is smaller than the sum of its proper divisors (1205542565108).

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

1011100211212 is a wasteful number, since it uses less digits than its factorization.

1011100211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396821150 (or 396821141 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1011100211212 its reverse (2121120011101), we get a palindrome (3132220222313).

The spelling of 1011100211212 in words is "one trillion, eleven billion, one hundred million, two hundred eleven thousand, two hundred twelve".