201100202421 has 8 divisors (see below), whose sum is σ = 268185718944. Its totient is φ = 134040743760.

The previous prime is 201100202371. The next prime is 201100202437. The reversal of 201100202421 is 124202001102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201100202421 - 2⁷ = 201100202293 is a prime.

It is a super-2 number, since 2×201100202421² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201100202421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201100202321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6496450 + ... + 6527331.

It is an arithmetic number, because the mean of its divisors is an integer number (33523214868).

Almost surely, 2^201100202421 is an apocalyptic number.

It is an amenable number.

201100202421 is a deficient number, since it is larger than the sum of its proper divisors (67085516523).

201100202421 is a wasteful number, since it uses less digits than its factorization.

201100202421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13028931.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201100202421 its reverse (124202001102), we get a palindrome (325302203523).

The spelling of 201100202421 in words is "two hundred one billion, one hundred million, two hundred two thousand, four hundred twenty-one".