21611242270110 has 32 divisors (see below), whose sum is σ = 54596822578560. Its totient is φ = 5459682257568.

The previous prime is 21611242270069. The next prime is 21611242270127. The reversal of 21611242270110 is 1107224211612.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18957229492 + ... + 18957230631.

It is an arithmetic number, because the mean of its divisors is an integer number (1706150705580).

Almost surely, 2^{21611242270110} is an apocalyptic number.

21611242270110 is an abundant number, since it is smaller than the sum of its proper divisors (32985580308450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21611242270110 is a wasteful number, since it uses less digits than its factorization.

21611242270110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37914460152.

The product of its (nonzero) digits is 2688, while the sum is 30.

Adding to 21611242270110 its reverse (1107224211612), we get a palindrome (22718466481722).

The spelling of 21611242270110 in words is "twenty-one trillion, six hundred eleven billion, two hundred forty-two million, two hundred seventy thousand, one hundred ten".