101210001123 has 24 divisors (see below), whose sum is σ = 171249577920. Its totient is φ = 52576623120.

The previous prime is 101210001121. The next prime is 101210001149. The reversal of 101210001123 is 321100012101.

It is not a de Polignac number, because 101210001123 - 2¹ = 101210001121 is a prime.

It is a super-2 number, since 2×101210001123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101210001099 and 101210001108.

It is not an unprimeable number, because it can be changed into a prime (101210001121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31293993 + ... + 31297226.

It is an arithmetic number, because the mean of its divisors is an integer number (7135399080).

Almost surely, 2^101210001123 is an apocalyptic number.

101210001123 is a deficient number, since it is larger than the sum of its proper divisors (70039576797).

101210001123 is a wasteful number, since it uses less digits than its factorization.

101210001123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62591247 (or 62591240 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 101210001123 its reverse (321100012101), we get a palindrome (422310013224).

The spelling of 101210001123 in words is "one hundred one billion, two hundred ten million, one thousand, one hundred twenty-three".