1021201111202 has 4 divisors (see below), whose sum is σ = 1531801666806. Its totient is φ = 510600555600.

The previous prime is 1021201111079. The next prime is 1021201111207. The reversal of 1021201111202 is 2021111021201.

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., 1014917219761 + 6283891441 = 1007431^2 + 79271^2 .

It is not an unprimeable number, because it can be changed into a prime (1021201111207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255300277799 + ... + 255300277802.

Almost surely, 2^{1021201111202} is an apocalyptic number.

1021201111202 is a deficient number, since it is larger than the sum of its proper divisors (510600555604).

1021201111202 is an equidigital number, since it uses as much as digits as its factorization.

1021201111202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510600555603.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1021201111202 its reverse (2021111021201), we get a palindrome (3042312132403).

Subtracting 1021201111202 from its reverse (2021111021201), we obtain a palindrome (999909909999).

The spelling of 1021201111202 in words is "one trillion, twenty-one billion, two hundred one million, one hundred eleven thousand, two hundred two".