20211202121210 has 8 divisors (see below), whose sum is σ = 36380163818196. Its totient is φ = 8084480848480.

The previous prime is 20211202121179. The next prime is 20211202121213. The reversal of 20211202121210 is 1212120211202.

It can be written as a sum of positive squares in 2 ways, for example, as 20209349421361 + 1852699849 = 4495481^2 + 43043^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20211202121213) 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, 1010560106051 + ... + 1010560106070.

Almost surely, 2^{20211202121210} is an apocalyptic number.

20211202121210 is a deficient number, since it is larger than the sum of its proper divisors (16168961696986).

20211202121210 is a wasteful number, since it uses less digits than its factorization.

20211202121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021120212128.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20211202121210 its reverse (1212120211202), we get a palindrome (21423322332412).

The spelling of 20211202121210 in words is "twenty trillion, two hundred eleven billion, two hundred two million, one hundred twenty-one thousand, two hundred ten".