1211012022112 has 48 divisors (see below), whose sum is σ = 2513154470400. Its totient is φ = 572839240320.

The previous prime is 1211012022097. The next prime is 1211012022173. The reversal of 1211012022112 is 2112202101121.

It is a super-4 number, since 4×1211012022112⁴ (a number of 49 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 947964 + ... + 1822267.

It is an arithmetic number, because the mean of its divisors is an integer number (52357384800).

Almost surely, 2^{1211012022112} is an apocalyptic number.

It is an amenable number.

1211012022112 is an abundant number, since it is smaller than the sum of its proper divisors (1302142448288).

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

1211012022112 is a wasteful number, since it uses less digits than its factorization.

1211012022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770979 (or 2770971 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1211012022112 its reverse (2112202101121), we get a palindrome (3323214123233).

The spelling of 1211012022112 in words is "one trillion, two hundred eleven billion, twelve million, twenty-two thousand, one hundred twelve".