1122121120212 has 36 divisors (see below), whose sum is σ = 2848859196820. Its totient is φ = 372407006592.

The previous prime is 1122121120157. The next prime is 1122121120229. The reversal of 1122121120212 is 2120211212211.

1122121120212 is a `hidden beast` number, since 1 + 1 + 221 + 211 + 20 + 212 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1085005556496 + 37115563716 = 1041636^2 + 192654^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

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, 68048593 + ... + 68065080.

Almost surely, 2^{1122121120212} is an apocalyptic number.

1122121120212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1122121120212 is an abundant number, since it is smaller than the sum of its proper divisors (1726738076608).

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

1122121120212 is a wasteful number, since it uses less digits than its factorization.

1122121120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136113912 (or 136113907 counting only the distinct ones).

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

Adding to 1122121120212 its reverse (2120211212211), we get a palindrome (3242332332423).

The spelling of 1122121120212 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, one hundred twenty thousand, two hundred twelve".