20211000111010 has 8 divisors (see below), whose sum is σ = 36379800199836. Its totient is φ = 8084400044400.

The previous prime is 20211000110999. The next prime is 20211000111161. The reversal of 20211000111010 is 1011100011202.

It can be written as a sum of positive squares in 2 ways, for example, as 20199568438449 + 11431672561 = 4494393^2 + 106919^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 2021100011101 = 20211000111010 / (2 + 0 + 2 + 1 + 1 + 0 + 0 + 0 + 1 + 1 + 1 + 0 + 1 + 0).

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, 1010550005541 + ... + 1010550005560.

Almost surely, 2^{20211000111010} is an apocalyptic number.

20211000111010 is a deficient number, since it is larger than the sum of its proper divisors (16168800088826).

20211000111010 is a wasteful number, since it uses less digits than its factorization.

20211000111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021100011108.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20211000111010 its reverse (1011100011202), we get a palindrome (21222100122212).

The spelling of 20211000111010 in words is "twenty trillion, two hundred eleven billion, one hundred eleven thousand, ten".