1220022202122 has 16 divisors (see below), whose sum is σ = 2711160449280. Its totient is φ = 406674067356.

The previous prime is 1220022202067. The next prime is 1220022202127. The reversal of 1220022202122 is 2212022200221.

It is a super-2 number, since 2×1220022202122² (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 = 1220022202095 and 1220022202104.

It is not an unprimeable number, because it can be changed into a prime (1220022202127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11296501818 + ... + 11296501925.

It is an arithmetic number, because the mean of its divisors is an integer number (169447528080).

Almost surely, 2^{1220022202122} is an apocalyptic number.

1220022202122 is an abundant number, since it is smaller than the sum of its proper divisors (1491138247158).

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

1220022202122 is a wasteful number, since it uses less digits than its factorization.

1220022202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22593003754 (or 22593003748 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1220022202122 its reverse (2212022200221), we get a palindrome (3432044402343).

The spelling of 1220022202122 in words is "one trillion, two hundred twenty billion, twenty-two million, two hundred two thousand, one hundred twenty-two".