21221032020130 has 8 divisors (see below), whose sum is σ = 38197857636252. Its totient is φ = 8488412808048.

The previous prime is 21221032020107. The next prime is 21221032020131. The reversal of 21221032020130 is 3102023012212.

It can be written as a sum of positive squares in 2 ways, for example, as 20055018628089 + 1166013392041 = 4478283^2 + 1079821^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21221032020098 and 21221032020107.

It is not an unprimeable number, because it can be changed into a prime (21221032020131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061051600997 + ... + 1061051601016.

Almost surely, 2^{21221032020130} is an apocalyptic number.

21221032020130 is a deficient number, since it is larger than the sum of its proper divisors (16976825616122).

21221032020130 is a wasteful number, since it uses less digits than its factorization.

21221032020130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122103202020.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21221032020130 its reverse (3102023012212), we get a palindrome (24323055032342).

The spelling of 21221032020130 in words is "twenty-one trillion, two hundred twenty-one billion, thirty-two million, twenty thousand, one hundred thirty".