20022061212 has 18 divisors (see below), whose sum is σ = 50611321488. Its totient is φ = 6674020392.

The previous prime is 20022061207. The next prime is 20022061249. The reversal of 20022061212 is 21216022002.

20022061212 is a `hidden beast` number, since 20 + 0 + 2 + 20 + 612 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 278084148 + ... + 278084219.

Almost surely, 2^20022061212 is an apocalyptic number.

It is an amenable number.

20022061212 is an abundant number, since it is smaller than the sum of its proper divisors (30589260276).

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

20022061212 is a wasteful number, since it uses less digits than its factorization.

20022061212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556168377 (or 556168372 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20022061212 its reverse (21216022002), we get a palindrome (41238083214).

The spelling of 20022061212 in words is "twenty billion, twenty-two million, sixty-one thousand, two hundred twelve".