1021202010 has 48 divisors (see below), whose sum is σ = 2665058760. Its totient is φ = 271301760.

The previous prime is 1021201999. The next prime is 1021202069. The reversal of 1021202010 is 102021201.

It can be written as a sum of positive squares in 4 ways, for example, as 280328049 + 740873961 = 16743^2 + 27219^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1021201983 and 1021202001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3120 + ... + 45300.

Almost surely, 2^1021202010 is an apocalyptic number.

1021202010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021202010 is an abundant number, since it is smaller than the sum of its proper divisors (1643856750).

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

1021202010 is a wasteful number, since it uses less digits than its factorization.

1021202010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42463 (or 42460 counting only the distinct ones).

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

The square root of 1021202010 is about 31956.2515010757. The cubic root of 1021202010 is about 1007.0179695539.

Adding to 1021202010 its reverse (102021201), we get a palindrome (1123223211).

The spelling of 1021202010 in words is "one billion, twenty-one million, two hundred two thousand, ten".