212542022 has 32 divisors (see below), whose sum is σ = 399596544. Its totient is φ = 82368000.

The previous prime is 212542021. The next prime is 212542061. The reversal of 212542022 is 220245212.

It is a super-2 number, since 2×212542022² = 90348222231696968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212541985 and 212542003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212542021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26147 + ... + 33297.

It is an arithmetic number, because the mean of its divisors is an integer number (12487392).

Almost surely, 2^212542022 is an apocalyptic number.

212542022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212542022 is a deficient number, since it is larger than the sum of its proper divisors (187054522).

212542022 is a wasteful number, since it uses less digits than its factorization.

212542022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7364.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 212542022 is about 14578.8210085727. The cubic root of 212542022 is about 596.7809287050.

Adding to 212542022 its reverse (220245212), we get a palindrome (432787234).

The spelling of 212542022 in words is "two hundred twelve million, five hundred forty-two thousand, twenty-two".