20212202123 has 16 divisors (see below), whose sum is σ = 21458844000. Its totient is φ = 19008283392.

The previous prime is 20212202107. The next prime is 20212202141. The reversal of 20212202123 is 32120221202.

It is not a de Polignac number, because 20212202123 - 2⁴ = 20212202107 is a prime.

It is a super-2 number, since 2×20212202123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212202183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132311 + ... + 240687.

It is an arithmetic number, because the mean of its divisors is an integer number (1341177750).

Almost surely, 2^20212202123 is an apocalyptic number.

20212202123 is a deficient number, since it is larger than the sum of its proper divisors (1246641877).

20212202123 is a wasteful number, since it uses less digits than its factorization.

20212202123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108574.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20212202123 its reverse (32120221202), we get a palindrome (52332423325).

The spelling of 20212202123 in words is "twenty billion, two hundred twelve million, two hundred two thousand, one hundred twenty-three".