1021001202 has 96 divisors (see below), whose sum is σ = 2522520000. Its totient is φ = 296182656.

The previous prime is 1021001171. The next prime is 1021001203. The reversal of 1021001202 is 2021001201.

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

It is not an unprimeable number, because it can be changed into a prime (1021001203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 290049 + ... + 293547.

It is an arithmetic number, because the mean of its divisors is an integer number (26276250).

Almost surely, 2^1021001202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021001202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1261260000).

1021001202 is an abundant number, since it is smaller than the sum of its proper divisors (1501518798).

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

1021001202 is a wasteful number, since it uses less digits than its factorization.

1021001202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3592 (or 3589 counting only the distinct ones).

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

The square root of 1021001202 is about 31953.1094261576. The cubic root of 1021001202 is about 1006.9519589381.

Adding to 1021001202 its reverse (2021001201), we get a palindrome (3042002403).

Subtracting 1021001202 from its reverse (2021001201), we obtain a palindrome (999999999).

The spelling of 1021001202 in words is "one billion, twenty-one million, one thousand, two hundred two".