222012121420 has 24 divisors (see below), whose sum is σ = 466280413200. Its totient is φ = 88794380352.

The previous prime is 222012121411. The next prime is 222012121427. The reversal of 222012121420 is 24121210222.

It is not an unprimeable number, because it can be changed into a prime (222012121427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479215 + ... + 820774.

It is an arithmetic number, because the mean of its divisors is an integer number (19428350550).

Almost surely, 2^222012121420 is an apocalyptic number.

222012121420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222012121420 is an abundant number, since it is smaller than the sum of its proper divisors (244268291780).

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

222012121420 is a wasteful number, since it uses less digits than its factorization.

222012121420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308537 (or 1308535 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222012121420 its reverse (24121210222), we get a palindrome (246133331642).

The spelling of 222012121420 in words is "two hundred twenty-two billion, twelve million, one hundred twenty-one thousand, four hundred twenty".