1221011122022 has 16 divisors (see below), whose sum is σ = 1856713737312. Its totient is φ = 602149505280.

The previous prime is 1221011121937. The next prime is 1221011122091. The reversal of 1221011122022 is 2202211101221.

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, 10683554 + ... + 10797237.

It is an arithmetic number, because the mean of its divisors is an integer number (116044608582).

Almost surely, 2^{1221011122022} is an apocalyptic number.

1221011122022 is a deficient number, since it is larger than the sum of its proper divisors (635702615290).

1221011122022 is a wasteful number, since it uses less digits than its factorization.

1221011122022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21481183.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1221011122022 its reverse (2202211101221), we get a palindrome (3423222223243).

The spelling of 1221011122022 in words is "one trillion, two hundred twenty-one billion, eleven million, one hundred twenty-two thousand, twenty-two".