20402262212 has 12 divisors (see below), whose sum is σ = 36193054716. Its totient is φ = 10061389440.

The previous prime is 20402262193. The next prime is 20402262227. The reversal of 20402262212 is 21226220402.

It can be written as a sum of positive squares in 2 ways, for example, as 9466122436 + 10936139776 = 97294^2 + 104576^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34935089 + ... + 34935672.

It is an arithmetic number, because the mean of its divisors is an integer number (3016087893).

Almost surely, 2^20402262212 is an apocalyptic number.

It is an amenable number.

20402262212 is a deficient number, since it is larger than the sum of its proper divisors (15790792504).

20402262212 is a wasteful number, since it uses less digits than its factorization.

20402262212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69870838 (or 69870836 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20402262212 its reverse (21226220402), we get a palindrome (41628482614).

The spelling of 20402262212 in words is "twenty billion, four hundred two million, two hundred sixty-two thousand, two hundred twelve".