20122444402 has 4 divisors (see below), whose sum is σ = 30183666606. Its totient is φ = 10061222200.

The previous prime is 20122444373. The next prime is 20122444411. The reversal of 20122444402 is 20444422102.

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., 20082007521 + 40436881 = 141711^2 + 6359^2 .

It is a super-2 number, since 2×20122444402² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5030611099 + ... + 5030611102.

Almost surely, 2^20122444402 is an apocalyptic number.

20122444402 is a deficient number, since it is larger than the sum of its proper divisors (10061222204).

20122444402 is a wasteful number, since it uses less digits than its factorization.

20122444402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10061222203.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 20122444402 its reverse (20444422102), we get a palindrome (40566866504).

The spelling of 20122444402 in words is "twenty billion, one hundred twenty-two million, four hundred forty-four thousand, four hundred two".