20022021212 has 24 divisors (see below), whose sum is σ = 36500661120. Its totient is φ = 9599186880.

The previous prime is 20022021211. The next prime is 20022021241. The reversal of 20022021212 is 21212022002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022021211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727163 + ... + 754194.

It is an arithmetic number, because the mean of its divisors is an integer number (1520860880).

Almost surely, 2^20022021212 is an apocalyptic number.

It is an amenable number.

20022021212 is a deficient number, since it is larger than the sum of its proper divisors (16478639908).

20022021212 is a wasteful number, since it uses less digits than its factorization.

20022021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481501 (or 1481499 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20022021212 its reverse (21212022002), we get a palindrome (41234043214).

The spelling of 20022021212 in words is "twenty billion, twenty-two million, twenty-one thousand, two hundred twelve".