1021022100202 has 32 divisors (see below), whose sum is σ = 1658141576784. Its totient is φ = 468733670400.

The previous prime is 1021022100199. The next prime is 1021022100227. The reversal of 1021022100202 is 2020012201201.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 19479505761 + 1001542594441 = 139569^2 + 1000771^2 .

It is a super-2 number, since 2×1021022100202² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3665202 + ... + 3933922.

Almost surely, 2^{1021022100202} is an apocalyptic number.

1021022100202 is a deficient number, since it is larger than the sum of its proper divisors (637119476582).

1021022100202 is a wasteful number, since it uses less digits than its factorization.

1021022100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269514.

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

Adding to 1021022100202 its reverse (2020012201201), we get a palindrome (3041034301403).

The spelling of 1021022100202 in words is "one trillion, twenty-one billion, twenty-two million, one hundred thousand, two hundred two".