21221211023110 has 16 divisors (see below), whose sum is σ = 43655062676256. Its totient is φ = 7275843779328.

The previous prime is 21221211023071. The next prime is 21221211023149. The reversal of 21221211023110 is 1132011212212.

It is an interprime number because it is at equal distance from previous prime (21221211023071) and next prime (21221211023149).

It is a super-3 number, since 3×21221211023110³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151580078667 + ... + 151580078806.

It is an arithmetic number, because the mean of its divisors is an integer number (2728441417266).

Almost surely, 2^{21221211023110} is an apocalyptic number.

21221211023110 is an abundant number, since it is smaller than the sum of its proper divisors (22433851653146).

21221211023110 is a wasteful number, since it uses less digits than its factorization.

21221211023110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303160157487.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21221211023110 its reverse (1132011212212), we get a palindrome (22353222235322).

The spelling of 21221211023110 in words is "twenty-one trillion, two hundred twenty-one billion, two hundred eleven million, twenty-three thousand, one hundred ten".