212020221220002 has 128 divisors (see below), whose sum is σ = 513187508736000. Its totient is φ = 64496658784320.

The previous prime is 212020221219973. The next prime is 212020221220033. The reversal of 212020221220002 is 200022122020212.

212020221220002 is a `hidden beast` number, since 21 + 202 + 0 + 221 + 220 + 0 + 0 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18775477 + ... + 27866807.

It is an arithmetic number, because the mean of its divisors is an integer number (4009277412000).

Almost surely, 2^{212020221220002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212020221220002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256593754368000).

212020221220002 is an abundant number, since it is smaller than the sum of its proper divisors (301167287515998).

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

212020221220002 is a wasteful number, since it uses less digits than its factorization.

212020221220002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9091733 (or 9091727 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 212020221220002 its reverse (200022122020212), we get a palindrome (412042343240214).

The spelling of 212020221220002 in words is "two hundred twelve trillion, twenty billion, two hundred twenty-one million, two hundred twenty thousand, two".