200101201990 has 32 divisors (see below), whose sum is σ = 381257280000. Its totient is φ = 75404191968.

The previous prime is 200101201987. The next prime is 200101201991. The reversal of 200101201990 is 99102101002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200101201991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2907790 + ... + 2975809.

It is an arithmetic number, because the mean of its divisors is an integer number (11914290000).

Almost surely, 2^200101201990 is an apocalyptic number.

200101201990 is a deficient number, since it is larger than the sum of its proper divisors (181156078010).

200101201990 is a wasteful number, since it uses less digits than its factorization.

200101201990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5883804.

The product of its (nonzero) digits is 324, while the sum is 25.

Adding to 200101201990 its reverse (99102101002), we get a palindrome (299203302992).

The spelling of 200101201990 in words is "two hundred billion, one hundred one million, two hundred one thousand, nine hundred ninety".