20110421444 has 12 divisors (see below), whose sum is σ = 36051609468. Its totient is φ = 9809961600.

The previous prime is 20110421369. The next prime is 20110421479. The reversal of 20110421444 is 44412401102.

It can be written as a sum of positive squares in 2 ways, for example, as 6395200900 + 13715220544 = 79970^2 + 117112^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61312097 + ... + 61312424.

It is an arithmetic number, because the mean of its divisors is an integer number (3004300789).

Almost surely, 2^20110421444 is an apocalyptic number.

It is an amenable number.

20110421444 is a deficient number, since it is larger than the sum of its proper divisors (15941188024).

20110421444 is a wasteful number, since it uses less digits than its factorization.

20110421444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122624566 (or 122624564 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 20110421444 its reverse (44412401102), we get a palindrome (64522822546).

The spelling of 20110421444 in words is "twenty billion, one hundred ten million, four hundred twenty-one thousand, four hundred forty-four".