123021010 has 64 divisors (see below), whose sum is σ = 282113280. Its totient is φ = 37601280.

The previous prime is 123021007. The next prime is 123021011. The reversal of 123021010 is 10120321.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (123021011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19890 + ... + 25330.

It is an arithmetic number, because the mean of its divisors is an integer number (4408020).

Almost surely, 2^123021010 is an apocalyptic number.

123021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123021010 is an abundant number, since it is smaller than the sum of its proper divisors (159092270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123021010 is a wasteful number, since it uses less digits than its factorization.

123021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5491.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 123021010 is about 11091.4836699154. The cubic root of 123021010 is about 497.3472978986.

Adding to 123021010 its reverse (10120321), we get a palindrome (133141331).

The spelling of 123021010 in words is "one hundred twenty-three million, twenty-one thousand, ten".