2021101002 has 24 divisors (see below), whose sum is σ = 4530055140. Its totient is φ = 650469120.

The previous prime is 2021100997. The next prime is 2021101009. The reversal of 2021101002 is 2001011202.

It can be written as a sum of positive squares in 2 ways, for example, as 1909777401 + 111323601 = 43701^2 + 10551^2 .

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 (2021101009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1935399 + ... + 1936442.

Almost surely, 2^2021101002 is an apocalyptic number.

2021101002 is an abundant number, since it is smaller than the sum of its proper divisors (2508954138).

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

2021101002 is a wasteful number, since it uses less digits than its factorization.

2021101002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871878 (or 3871875 counting only the distinct ones).

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

The square root of 2021101002 is about 44956.6569264219. The cubic root of 2021101002 is about 1264.3364905066.

Adding to 2021101002 its reverse (2001011202), we get a palindrome (4022112204).

The spelling of 2021101002 in words is "two billion, twenty-one million, one hundred one thousand, two".