100202121002 has 4 divisors (see below), whose sum is σ = 150303181506. Its totient is φ = 50101060500.

The previous prime is 100202120989. The next prime is 100202121013. The reversal of 100202121002 is 200121202001.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 88227414961 + 11974706041 = 297031^2 + 109429^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25050530249 + ... + 25050530252.

Almost surely, 2^100202121002 is an apocalyptic number.

100202121002 is a deficient number, since it is larger than the sum of its proper divisors (50101060504).

100202121002 is an equidigital number, since it uses as much as digits as its factorization.

100202121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50101060503.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100202121002 its reverse (200121202001), we get a palindrome (300323323003).

The spelling of 100202121002 in words is "one hundred billion, two hundred two million, one hundred twenty-one thousand, two".