20022002122 has 4 divisors (see below), whose sum is σ = 30033003186. Its totient is φ = 10011001060.

The previous prime is 20022002107. The next prime is 20022002167. The reversal of 20022002122 is 22120022002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15406022641 + 4615979481 = 124121^2 + 67941^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005500529 + ... + 5005500532.

Almost surely, 2^20022002122 is an apocalyptic number.

20022002122 is a deficient number, since it is larger than the sum of its proper divisors (10011001064).

20022002122 is a wasteful number, since it uses less digits than its factorization.

20022002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011001063.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20022002122 its reverse (22120022002), we get a palindrome (42142024124).

The spelling of 20022002122 in words is "twenty billion, twenty-two million, two thousand, one hundred twenty-two".