1021121022 has 16 divisors (see below), whose sum is σ = 2042680320. Its totient is φ = 340300632.

The previous prime is 1021120987. The next prime is 1021121033. The reversal of 1021121022 is 2201211201.

It is a junction number, because it is equal to n+sod(n) for n = 1021120989 and 1021121007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17379 + ... + 48417.

It is an arithmetic number, because the mean of its divisors is an integer number (127667520).

Almost surely, 2^1021121022 is an apocalyptic number.

1021121022 is an abundant number, since it is smaller than the sum of its proper divisors (1021559298).

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

1021121022 is a wasteful number, since it uses less digits than its factorization.

1021121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36527.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1021121022 is about 31954.9843060515. The cubic root of 1021121022 is about 1006.9913478125.

Adding to 1021121022 its reverse (2201211201), we get a palindrome (3222332223).

The spelling of 1021121022 in words is "one billion, twenty-one million, one hundred twenty-one thousand, twenty-two".