20221221013210 has 32 divisors (see below), whose sum is σ = 41605394666112. Its totient is φ = 6931747679040.

The previous prime is 20221221013193. The next prime is 20221221013247. The reversal of 20221221013210 is 1231012212202.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25489512 + ... + 26270851.

It is an arithmetic number, because the mean of its divisors is an integer number (1300168583316).

Almost surely, 2^{20221221013210} is an apocalyptic number.

20221221013210 is an abundant number, since it is smaller than the sum of its proper divisors (21384173652902).

20221221013210 is a wasteful number, since it uses less digits than its factorization.

20221221013210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51765958.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20221221013210 its reverse (1231012212202), we get a palindrome (21452233225412).

The spelling of 20221221013210 in words is "twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, thirteen thousand, two hundred ten".