1121222211012 has 24 divisors (see below), whose sum is σ = 2906872399200. Its totient is φ = 373740736968.

The previous prime is 1121222211007. The next prime is 1121222211059. The reversal of 1121222211012 is 2101122221211.

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

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, 5190843462 + ... + 5190843677.

It is an arithmetic number, because the mean of its divisors is an integer number (121119683300).

Almost surely, 2^{1121222211012} is an apocalyptic number.

1121222211012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121222211012 is an abundant number, since it is smaller than the sum of its proper divisors (1785650188188).

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

1121222211012 is a wasteful number, since it uses less digits than its factorization.

1121222211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10381687152 (or 10381687144 counting only the distinct ones).

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

Adding to 1121222211012 its reverse (2101122221211), we get a palindrome (3222344432223).

The spelling of 1121222211012 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred eleven thousand, twelve".