202101002099 has 4 divisors (see below), whose sum is σ = 202354580064. Its totient is φ = 201847424136.

The previous prime is 202101002069. The next prime is 202101002101. The reversal of 202101002099 is 990200101202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202101002099 - 2¹² = 202100998003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202101002069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126787787 + ... + 126789380.

It is an arithmetic number, because the mean of its divisors is an integer number (50588645016).

Almost surely, 2^202101002099 is an apocalyptic number.

202101002099 is a deficient number, since it is larger than the sum of its proper divisors (253577965).

202101002099 is an equidigital number, since it uses as much as digits as its factorization.

202101002099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253577964.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 202101002099 in words is "two hundred two billion, one hundred one million, two thousand, ninety-nine".