21211111210010 has 32 divisors (see below), whose sum is σ = 38193238323072. Its totient is φ = 8481503131200.

The previous prime is 21211111210007. The next prime is 21211111210013. The reversal of 21211111210010 is 1001211111212.

It is an interprime number because it is at equal distance from previous prime (21211111210007) and next prime (21211111210013).

It is a super-2 number, since 2×21211111210010² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21211111210013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528263435 + ... + 528303585.

It is an arithmetic number, because the mean of its divisors is an integer number (1193538697596).

Almost surely, 2^{21211111210010} is an apocalyptic number.

21211111210010 is a deficient number, since it is larger than the sum of its proper divisors (16982127113062).

21211111210010 is a wasteful number, since it uses less digits than its factorization.

21211111210010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57158.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21211111210010 its reverse (1001211111212), we get a palindrome (22212322321222).

The spelling of 21211111210010 in words is "twenty-one trillion, two hundred eleven billion, one hundred eleven million, two hundred ten thousand, ten".