1010100123 has 12 divisors (see below), whose sum is σ = 1476613320. Its totient is φ = 665286336.

The previous prime is 1010100121. The next prime is 1010100127. The reversal of 1010100123 is 3210010101.

It is not a de Polignac number, because 1010100123 - 2¹ = 1010100121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1010100121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 675358 + ... + 676851.

It is an arithmetic number, because the mean of its divisors is an integer number (123051110).

Almost surely, 2^1010100123 is an apocalyptic number.

1010100123 is a deficient number, since it is larger than the sum of its proper divisors (466513197).

1010100123 is a wasteful number, since it uses less digits than its factorization.

1010100123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352298 (or 1352295 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1010100123 is about 31782.0723521925. The cubic root of 1010100123 is about 1003.3554361222.

Adding to 1010100123 its reverse (3210010101), we get a palindrome (4220110224).

The spelling of 1010100123 in words is "one billion, ten million, one hundred thousand, one hundred twenty-three".