202121143401 has 16 divisors (see below), whose sum is σ = 276835230144. Its totient is φ = 131101630464.

The previous prime is 202121143363. The next prime is 202121143447. The reversal of 202121143401 is 104341121202.

It is not a de Polignac number, because 202121143401 - 2⁶ = 202121143337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202121143201) 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, 3015156 + ... + 3081461.

It is an arithmetic number, because the mean of its divisors is an integer number (17302201884).

Almost surely, 2^202121143401 is an apocalyptic number.

It is an amenable number.

202121143401 is a deficient number, since it is larger than the sum of its proper divisors (74714086743).

202121143401 is a wasteful number, since it uses less digits than its factorization.

202121143401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6096920.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 202121143401 its reverse (104341121202), we get a palindrome (306462264603).

The spelling of 202121143401 in words is "two hundred two billion, one hundred twenty-one million, one hundred forty-three thousand, four hundred one".