20012212190 has 16 divisors (see below), whose sum is σ = 36081929520. Its totient is φ = 7991563200.

The previous prime is 20012212151. The next prime is 20012212261. The reversal of 20012212190 is 9121221002.

It is a happy number.

It is a super-2 number, since 2×20012212190² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1658900 + ... + 1670919.

It is an arithmetic number, because the mean of its divisors is an integer number (2255120595).

Almost surely, 2^20012212190 is an apocalyptic number.

20012212190 is a deficient number, since it is larger than the sum of its proper divisors (16069717330).

20012212190 is a wasteful number, since it uses less digits than its factorization.

20012212190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3330427.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 20012212190 its reverse (9121221002), we get a palindrome (29133433192).

The spelling of 20012212190 in words is "twenty billion, twelve million, two hundred twelve thousand, one hundred ninety".