20101223422 has 32 divisors (see below), whose sum is σ = 36438441984. Its totient is φ = 8133566400.

The previous prime is 20101223411. The next prime is 20101223437. The reversal of 20101223422 is 22432210102.

It is a super-2 number, since 2×20101223422² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20101223422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547038 + ... + 582625.

It is an arithmetic number, because the mean of its divisors is an integer number (1138701312).

Almost surely, 2^20101223422 is an apocalyptic number.

20101223422 is a deficient number, since it is larger than the sum of its proper divisors (16337218562).

20101223422 is a wasteful number, since it uses less digits than its factorization.

20101223422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129744.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20101223422 its reverse (22432210102), we get a palindrome (42533433524).

The spelling of 20101223422 in words is "twenty billion, one hundred one million, two hundred twenty-three thousand, four hundred twenty-two".