1021122021002 has 4 divisors (see below), whose sum is σ = 1531683031506. Its totient is φ = 510561010500.

The previous prime is 1021122021001. The next prime is 1021122021047. The reversal of 1021122021002 is 2001202211201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 812484101641 + 208637919361 = 901379^2 + 456769^2 .

It is a super-3 number, since 3×1021122021002³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021122021001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255280505249 + ... + 255280505252.

Almost surely, 2^{1021122021002} is an apocalyptic number.

1021122021002 is a deficient number, since it is larger than the sum of its proper divisors (510561010504).

1021122021002 is an equidigital number, since it uses as much as digits as its factorization.

1021122021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510561010503.

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

Adding to 1021122021002 its reverse (2001202211201), we get a palindrome (3022324232203).

The spelling of 1021122021002 in words is "one trillion, twenty-one billion, one hundred twenty-two million, twenty-one thousand, two".