123020220021010 has 32 divisors (see below), whose sum is σ = 238574511775152. Its totient is φ = 45402936791040.

The previous prime is 123020220021001. The next prime is 123020220021029. The reversal of 123020220021010 is 10120022020321.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 60699821238081 + 62320398782929 = 7791009^2 + 7894327^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207136479 + ... + 207729538.

Almost surely, 2^{123020220021010} is an apocalyptic number.

123020220021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123020220021010 is a deficient number, since it is larger than the sum of its proper divisors (115554291754142).

123020220021010 is a wasteful number, since it uses less digits than its factorization.

123020220021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414868318.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 123020220021010 its reverse (10120022020321), we get a palindrome (133140242041331).

The spelling of 123020220021010 in words is "one hundred twenty-three trillion, twenty billion, two hundred twenty million, twenty-one thousand, ten".