210122111442 has 16 divisors (see below), whose sum is σ = 420264754560. Its totient is φ = 70037281872.

The previous prime is 210122111429. The next prime is 210122111447. The reversal of 210122111442 is 244111221012.

It is not an unprimeable number, because it can be changed into a prime (210122111447) 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, 720813 + ... + 969440.

It is an arithmetic number, because the mean of its divisors is an integer number (26266547160).

Almost surely, 2^210122111442 is an apocalyptic number.

210122111442 is an abundant number, since it is smaller than the sum of its proper divisors (210142643118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210122111442 is a wasteful number, since it uses less digits than its factorization.

210122111442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710977.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 210122111442 its reverse (244111221012), we get a palindrome (454233332454).

The spelling of 210122111442 in words is "two hundred ten billion, one hundred twenty-two million, one hundred eleven thousand, four hundred forty-two".