21121345614016 has 14 divisors (see below), whose sum is σ = 41912670202940. Its totient is φ = 10560672806976.

The previous prime is 21121345613933. The next prime is 21121345614041. The reversal of 21121345614016 is 61041654312112.

It is a super-2 number, since 2×21121345614016² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165010512546 + ... + 165010512673.

Almost surely, 2^{21121345614016} is an apocalyptic number.

It is an amenable number.

21121345614016 is a deficient number, since it is larger than the sum of its proper divisors (20791324588924).

21121345614016 is an equidigital number, since it uses as much as digits as its factorization.

21121345614016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330021025231 (or 330021025221 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

Adding to 21121345614016 its reverse (61041654312112), we get a palindrome (82162999926128).

The spelling of 21121345614016 in words is "twenty-one trillion, one hundred twenty-one billion, three hundred forty-five million, six hundred fourteen thousand, sixteen".