212222220122000 has 160 divisors (see below), whose sum is σ = 559903513238784. Its totient is φ = 77157947136000.

The previous prime is 212222220121993. The next prime is 212222220122027. The reversal of 212222220122000 is 221022222212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122848232 + ... + 124563768.

Almost surely, 2^{212222220122000} is an apocalyptic number.

212222220122000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212222220122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279951756619392).

212222220122000 is an abundant number, since it is smaller than the sum of its proper divisors (347681293116784).

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

212222220122000 is a wasteful number, since it uses less digits than its factorization.

212222220122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721194 (or 1721178 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 212222220122000 its reverse (221022222212), we get a palindrome (212443242344212).

It can be divided in two parts, 2122222 and 20122000, that added together give a palindrome (22244222).

The spelling of 212222220122000 in words is "two hundred twelve trillion, two hundred twenty-two billion, two hundred twenty million, one hundred twenty-two thousand".