1021221011002 has 8 divisors (see below), whose sum is σ = 1538405901396. Its totient is φ = 508419043872.

The previous prime is 1021221010993. The next prime is 1021221011023. The reversal of 1021221011002 is 2001101221201.

It can be written as a sum of positive squares in 2 ways, for example, as 833384584201 + 187836426801 = 912899^2 + 433401^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1095730233 + ... + 1095731164.

Almost surely, 2^{1021221011002} is an apocalyptic number.

1021221011002 is a deficient number, since it is larger than the sum of its proper divisors (517184890394).

1021221011002 is a wasteful number, since it uses less digits than its factorization.

1021221011002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191461632.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1021221011002 its reverse (2001101221201), we get a palindrome (3022322232203).

The spelling of 1021221011002 in words is "one trillion, twenty-one billion, two hundred twenty-one million, eleven thousand, two".