21113214625364 has 24 divisors (see below), whose sum is σ = 39508886787048. Its totient is φ = 9837257830400.

The previous prime is 21113214625361. The next prime is 21113214625369. The reversal of 21113214625364 is 46352641231112.

It can be written as a sum of positive squares in 4 ways, for example, as 3849954136900 + 17263260488464 = 1962130^2 + 4154908^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113214625361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1537064669 + ... + 1537078404.

It is an arithmetic number, because the mean of its divisors is an integer number (1646203616127).

Almost surely, 2^{21113214625364} is an apocalyptic number.

It is an amenable number.

21113214625364 is a deficient number, since it is larger than the sum of its proper divisors (18395672161684).

21113214625364 is a wasteful number, since it uses less digits than its factorization.

21113214625364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3074143195 (or 3074143193 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

Adding to 21113214625364 its reverse (46352641231112), we get a palindrome (67465855856476).

The spelling of 21113214625364 in words is "twenty-one trillion, one hundred thirteen billion, two hundred fourteen million, six hundred twenty-five thousand, three hundred sixty-four".