202121214142 has 16 divisors (see below), whose sum is σ = 312373059120. Its totient is φ = 98039710912.

The previous prime is 202121214083. The next prime is 202121214149. The reversal of 202121214142 is 241412121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202121214149) 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, 10702948 + ... + 10721815.

It is an arithmetic number, because the mean of its divisors is an integer number (19523316195).

Almost surely, 2^202121214142 is an apocalyptic number.

202121214142 is a deficient number, since it is larger than the sum of its proper divisors (110251844978).

202121214142 is a wasteful number, since it uses less digits than its factorization.

202121214142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21424907.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 202121214142 its reverse (241412121202), we get a palindrome (443533335344).

The spelling of 202121214142 in words is "two hundred two billion, one hundred twenty-one million, two hundred fourteen thousand, one hundred forty-two".