1201112212122 has 32 divisors (see below), whose sum is σ = 2669384678400. Its totient is φ = 400333773024.

The previous prime is 1201112212117. The next prime is 1201112212127. The reversal of 1201112212122 is 2212122111021.

1201112212122 is a `hidden beast` number, since 120 + 111 + 221 + 212 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1201112212117) and next prime (1201112212127).

It is a super-2 number, since 2×1201112212122² (a number of 25 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1201112212095 and 1201112212104.

It is not an unprimeable number, because it can be changed into a prime (1201112212127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433338 + ... + 1609349.

It is an arithmetic number, because the mean of its divisors is an integer number (83418271200).

Almost surely, 2^{1201112212122} is an apocalyptic number.

1201112212122 is an abundant number, since it is smaller than the sum of its proper divisors (1468272466278).

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

1201112212122 is a wasteful number, since it uses less digits than its factorization.

1201112212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053587 (or 2053581 counting only the distinct ones).

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

Adding to 1201112212122 its reverse (2212122111021), we get a palindrome (3413234323143).

The spelling of 1201112212122 in words is "one trillion, two hundred one billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty-two".