20102211122170 has 8 divisors (see below), whose sum is σ = 36183980019924. Its totient is φ = 8040884448864.

The previous prime is 20102211122117. The next prime is 20102211122171. The reversal of 20102211122170 is 7122111220102.

It can be written as a sum of positive squares in 2 ways, for example, as 16336139156401 + 3766071965769 = 4041799^2 + 1940637^2 .

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 (20102211122171) 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, 1005110556099 + ... + 1005110556118.

Almost surely, 2^{20102211122170} is an apocalyptic number.

20102211122170 is a deficient number, since it is larger than the sum of its proper divisors (16081768897754).

20102211122170 is a wasteful number, since it uses less digits than its factorization.

20102211122170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010221112224.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 20102211122170 its reverse (7122111220102), we get a palindrome (27224322342272).

The spelling of 20102211122170 in words is "twenty trillion, one hundred two billion, two hundred eleven million, one hundred twenty-two thousand, one hundred seventy".