103213622021 has 4 divisors (see below), whose sum is σ = 103223679372. Its totient is φ = 103203564672.

The previous prime is 103213622011. The next prime is 103213622033. The reversal of 103213622021 is 120226312301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8833180225 + 94380441796 = 93985^2 + 307214^2 .

It is a cyclic number.

It is not a de Polignac number, because 103213622021 - 2³⁰ = 102139880197 is a prime.

It is a super-2 number, since 2×103213622021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103213622011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5013266 + ... + 5033811.

It is an arithmetic number, because the mean of its divisors is an integer number (25805919843).

Almost surely, 2^103213622021 is an apocalyptic number.

It is an amenable number.

103213622021 is a deficient number, since it is larger than the sum of its proper divisors (10057351).

103213622021 is a wasteful number, since it uses less digits than its factorization.

103213622021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10057350.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 103213622021 its reverse (120226312301), we get a palindrome (223439934322).

The spelling of 103213622021 in words is "one hundred three billion, two hundred thirteen million, six hundred twenty-two thousand, twenty-one".