21520003022110 has 32 divisors (see below), whose sum is σ = 39754952969472. Its totient is φ = 8383939449600.

The previous prime is 21520003022099. The next prime is 21520003022191. The reversal of 21520003022110 is 1122030002512.

It is a super-2 number, since 2×21520003022110² (a number of 27 digits) contains 22 as substring.

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, 148116366 + ... + 148261585.

It is an arithmetic number, because the mean of its divisors is an integer number (1242342280296).

Almost surely, 2^{21520003022110} is an apocalyptic number.

21520003022110 is a deficient number, since it is larger than the sum of its proper divisors (18234949947362).

21520003022110 is a wasteful number, since it uses less digits than its factorization.

21520003022110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296378148.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 21520003022110 its reverse (1122030002512), we get a palindrome (22642033024622).

The spelling of 21520003022110 in words is "twenty-one trillion, five hundred twenty billion, three million, twenty-two thousand, one hundred ten".