212020123134 has 32 divisors (see below), whose sum is σ = 434063836800. Its totient is φ = 69004004832.

The previous prime is 212020123123. The next prime is 212020123151. The reversal of 212020123134 is 431321020212.

It is a super-2 number, since 2×212020123134² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212020123134.

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, 544104 + ... + 848580.

It is an arithmetic number, because the mean of its divisors is an integer number (13564494900).

Almost surely, 2^212020123134 is an apocalyptic number.

212020123134 is an abundant number, since it is smaller than the sum of its proper divisors (222043713666).

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

212020123134 is a wasteful number, since it uses less digits than its factorization.

212020123134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307224.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 212020123134 its reverse (431321020212), we get a palindrome (643341143346).

The spelling of 212020123134 in words is "two hundred twelve billion, twenty million, one hundred twenty-three thousand, one hundred thirty-four".