20001120221210 has 8 divisors (see below), whose sum is σ = 36002016398196. Its totient is φ = 8000448088480.

The previous prime is 20001120221191. The next prime is 20001120221263. The reversal of 20001120221210 is 1212202110002.

It can be written as a sum of positive squares in 2 ways, for example, as 17388057670201 + 2613062551009 = 4169899^2 + 1616497^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000056011051 + ... + 1000056011070.

Almost surely, 2^{20001120221210} is an apocalyptic number.

20001120221210 is a deficient number, since it is larger than the sum of its proper divisors (16000896176986).

20001120221210 is a wasteful number, since it uses less digits than its factorization.

20001120221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000112022128.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20001120221210 its reverse (1212202110002), we get a palindrome (21213322331212).

The spelling of 20001120221210 in words is "twenty trillion, one billion, one hundred twenty million, two hundred twenty-one thousand, two hundred ten".