222121001020212 has 36 divisors (see below), whose sum is σ = 641682891836896. Its totient is φ = 63463143148560.

The previous prime is 222121001020157. The next prime is 222121001020231. The reversal of 222121001020212 is 212020100121222.

It is a happy number.

222121001020212 is a `hidden beast` number, since 2 + 221 + 210 + 0 + 1 + 0 + 20 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 440716271614 + ... + 440716272117.

Almost surely, 2^{222121001020212} is an apocalyptic number.

It is an amenable number.

222121001020212 is an abundant number, since it is smaller than the sum of its proper divisors (419561890816684).

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

222121001020212 is a wasteful number, since it uses less digits than its factorization.

222121001020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881432543748 (or 881432543743 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222121001020212 its reverse (212020100121222), we get a palindrome (434141101141434).

The spelling of 222121001020212 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one million, twenty thousand, two hundred twelve".