1122001221021 has 16 divisors (see below), whose sum is σ = 1501936075200. Its totient is φ = 745039145088.

The previous prime is 1122001221001. The next prime is 1122001221023. The reversal of 1122001221021 is 1201221002211.

It is not a de Polignac number, because 1122001221021 - 2¹⁷ = 1122001089949 is a prime.

It is a super-2 number, since 2×1122001221021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122001221023) 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, 114795 + ... + 1502391.

It is an arithmetic number, because the mean of its divisors is an integer number (93871004700).

Almost surely, 2^{1122001221021} is an apocalyptic number.

It is an amenable number.

1122001221021 is a deficient number, since it is larger than the sum of its proper divisors (379934854179).

1122001221021 is a wasteful number, since it uses less digits than its factorization.

1122001221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388668.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1122001221021 its reverse (1201221002211), we get a palindrome (2323222223232).

The spelling of 1122001221021 in words is "one trillion, one hundred twenty-two billion, one million, two hundred twenty-one thousand, twenty-one".