22121110211010 has 32 divisors (see below), whose sum is σ = 53091964657152. Its totient is φ = 5898818261760.

The previous prime is 22121110211009. The next prime is 22121110211047. The reversal of 22121110211010 is 1011201112122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon 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, 7780551 + ... + 10236170.

It is an arithmetic number, because the mean of its divisors is an integer number (1659123895536).

Almost surely, 2^{22121110211010} is an apocalyptic number.

22121110211010 is an abundant number, since it is smaller than the sum of its proper divisors (30970854446142).

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

22121110211010 is a wasteful number, since it uses less digits than its factorization.

22121110211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18057658.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 22121110211010 its reverse (1011201112122), we get a palindrome (23132311323132).

The spelling of 22121110211010 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred ten million, two hundred eleven thousand, ten".