1221011020022 has 8 divisors (see below), whose sum is σ = 1866073445856. Its totient is φ = 598986538072.

The previous prime is 1221011019997. The next prime is 1221011020027. The reversal of 1221011020022 is 2200201101221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1221011020022² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221011019979 and 1221011020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221011020027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5759485838 + ... + 5759486049.

It is an arithmetic number, because the mean of its divisors is an integer number (233259180732).

Almost surely, 2^{1221011020022} is an apocalyptic number.

1221011020022 is a deficient number, since it is larger than the sum of its proper divisors (645062425834).

1221011020022 is a wasteful number, since it uses less digits than its factorization.

1221011020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11518971942.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1221011020022 its reverse (2200201101221), we get a palindrome (3421212121243).

The spelling of 1221011020022 in words is "one trillion, two hundred twenty-one billion, eleven million, twenty thousand, twenty-two".