212002111022220 has 120 divisors (see below), whose sum is σ = 665062405240464. Its totient is φ = 56533562112384.

The previous prime is 212002111022189. The next prime is 212002111022227. The reversal of 212002111022220 is 22220111200212.

It is a happy number.

212002111022220 is a `hidden beast` number, since 2 + 1 + 200 + 211 + 10 + 22 + 220 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 212002111022193 and 212002111022202.

It is not an unprimeable number, because it can be changed into a prime (212002111022227) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 404652354 + ... + 405175926.

Almost surely, 2^{212002111022220} is an apocalyptic number.

212002111022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212002111022220 is an abundant number, since it is smaller than the sum of its proper divisors (453060294218244).

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

212002111022220 is a wasteful number, since it uses less digits than its factorization.

212002111022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773541 (or 773530 counting only the distinct ones).

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

Adding to 212002111022220 its reverse (22220111200212), we get a palindrome (234222222222432).

The spelling of 212002111022220 in words is "two hundred twelve trillion, two billion, one hundred eleven million, twenty-two thousand, two hundred twenty".