21111022130 has 32 divisors (see below), whose sum is σ = 42133963968. Its totient is φ = 7550884800.

The previous prime is 21111022117. The next prime is 21111022133. The reversal of 21111022130 is 3122011112.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21111022133) 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, 1566392 + ... + 1579811.

It is an arithmetic number, because the mean of its divisors is an integer number (1316686374).

Almost surely, 2^21111022130 is an apocalyptic number.

21111022130 is a deficient number, since it is larger than the sum of its proper divisors (21022941838).

21111022130 is a wasteful number, since it uses less digits than its factorization.

21111022130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3146282.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21111022130 its reverse (3122011112), we get a palindrome (24233033242).

The spelling of 21111022130 in words is "twenty-one billion, one hundred eleven million, twenty-two thousand, one hundred thirty".