1021211201002 has 4 divisors (see below), whose sum is σ = 1531816801506. Its totient is φ = 510605600500.

The previous prime is 1021211200937. The next prime is 1021211201027. The reversal of 1021211201002 is 2001021121201.

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., 1020829350321 + 381850681 = 1010361^2 + 19541^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255302800249 + ... + 255302800252.

Almost surely, 2^{1021211201002} is an apocalyptic number.

1021211201002 is a deficient number, since it is larger than the sum of its proper divisors (510605600504).

1021211201002 is an equidigital number, since it uses as much as digits as its factorization.

1021211201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510605600503.

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

Adding to 1021211201002 its reverse (2001021121201), we get a palindrome (3022232322203).

The spelling of 1021211201002 in words is "one trillion, twenty-one billion, two hundred eleven million, two hundred one thousand, two".