1021220002102 has 4 divisors (see below), whose sum is σ = 1531830003156. Its totient is φ = 510610001050.

The previous prime is 1021220002087. The next prime is 1021220002129. The reversal of 1021220002102 is 2012000221201.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255305000524 + ... + 255305000527.

It is an arithmetic number, because the mean of its divisors is an integer number (382957500789).

Almost surely, 2^{1021220002102} is an apocalyptic number.

1021220002102 is a deficient number, since it is larger than the sum of its proper divisors (510610001054).

1021220002102 is an equidigital number, since it uses as much as digits as its factorization.

1021220002102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510610001053.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1021220002102 its reverse (2012000221201), we get a palindrome (3033220223303).

The spelling of 1021220002102 in words is "one trillion, twenty-one billion, two hundred twenty million, two thousand, one hundred two".