212354215254 has 24 divisors (see below), whose sum is σ = 461148882480. Its totient is φ = 70623494928.

The previous prime is 212354215253. The next prime is 212354215261. The reversal of 212354215254 is 452512453212.

212354215254 is a `hidden beast` number, since 2 + 12 + 3 + 542 + 1 + 52 + 54 = 666.

It is a super-2 number, since 2×212354215254² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212354215253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13428837 + ... + 13444640.

It is an arithmetic number, because the mean of its divisors is an integer number (19214536770).

Almost surely, 2^212354215254 is an apocalyptic number.

212354215254 is an abundant number, since it is smaller than the sum of its proper divisors (248794667226).

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

212354215254 is a wasteful number, since it uses less digits than its factorization.

212354215254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26873924 (or 26873921 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

Adding to 212354215254 its reverse (452512453212), we get a palindrome (664866668466).

The spelling of 212354215254 in words is "two hundred twelve billion, three hundred fifty-four million, two hundred fifteen thousand, two hundred fifty-four".