201421331402 has 16 divisors (see below), whose sum is σ = 304200383424. Its totient is φ = 100021500000.

The previous prime is 201421331383. The next prime is 201421331429. The reversal of 201421331402 is 204133124102.

It is a super-2 number, since 2×201421331402² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1332902 + ... + 1476302.

It is an arithmetic number, because the mean of its divisors is an integer number (19012523964).

Almost surely, 2^201421331402 is an apocalyptic number.

201421331402 is a deficient number, since it is larger than the sum of its proper divisors (102779052022).

201421331402 is a wasteful number, since it uses less digits than its factorization.

201421331402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148205.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 201421331402 its reverse (204133124102), we get a palindrome (405554455504).

The spelling of 201421331402 in words is "two hundred one billion, four hundred twenty-one million, three hundred thirty-one thousand, four hundred two".