1021121045226 has 24 divisors (see below), whose sum is σ = 2248698260484. Its totient is φ = 334793784960.

The previous prime is 1021121045221. The next prime is 1021121045237. The reversal of 1021121045226 is 6225401211201.

It is a happy number.

1021121045226 is a `hidden beast` number, since 1 + 0 + 21 + 12 + 104 + 522 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 952866870201 + 68254175025 = 976149^2 + 261255^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1021121045226.

It is not an unprimeable number, because it can be changed into a prime (1021121045221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 464990271 + ... + 464992466.

Almost surely, 2^{1021121045226} is an apocalyptic number.

1021121045226 is an abundant number, since it is smaller than the sum of its proper divisors (1227577215258).

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

1021121045226 is a wasteful number, since it uses less digits than its factorization.

1021121045226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929982806 (or 929982803 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 1021121045226 its reverse (6225401211201), we get a palindrome (7246522256427).

The spelling of 1021121045226 in words is "one trillion, twenty-one billion, one hundred twenty-one million, forty-five thousand, two hundred twenty-six".