212020312542 has 32 divisors (see below), whose sum is σ = 446386533120. Its totient is φ = 66949585920.

The previous prime is 212020312519. The next prime is 212020312597. The reversal of 212020312542 is 245213020212.

212020312542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212020312542² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2125567 + ... + 2223077.

It is an arithmetic number, because the mean of its divisors is an integer number (13949579160).

Almost surely, 2^212020312542 is an apocalyptic number.

212020312542 is an abundant number, since it is smaller than the sum of its proper divisors (234366220578).

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

212020312542 is a wasteful number, since it uses less digits than its factorization.

212020312542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116608.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 212020312542 its reverse (245213020212), we get a palindrome (457233332754).

The spelling of 212020312542 in words is "two hundred twelve billion, twenty million, three hundred twelve thousand, five hundred forty-two".