1021010202 has 12 divisors (see below), whose sum is σ = 2212188810. Its totient is φ = 340336728.

The previous prime is 1021010197. The next prime is 1021010231. The reversal of 1021010202 is 2020101201.

It can be written as a sum of positive squares in only one way, i.e., 802532241 + 218477961 = 28329^2 + 14781^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28361377 + ... + 28361412.

Almost surely, 2^1021010202 is an apocalyptic number.

1021010202 is an abundant number, since it is smaller than the sum of its proper divisors (1191178608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021010202 is a wasteful number, since it uses less digits than its factorization.

1021010202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56722797 (or 56722794 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1021010202 is about 31953.2502572117. The cubic root of 1021010202 is about 1006.9549176487.

Adding to 1021010202 its reverse (2020101201), we get a palindrome (3041111403).

Subtracting 1021010202 from its reverse (2020101201), we obtain a palindrome (999090999).

The spelling of 1021010202 in words is "one billion, twenty-one million, ten thousand, two hundred two".