64100244212121 has 32 divisors (see below), whose sum is σ = 97471394133120. Its totient is φ = 37119906929664.

The previous prime is 64100244212101. The next prime is 64100244212141. The reversal of 64100244212121 is 12121244200146.

It is an interprime number because it is at equal distance from previous prime (64100244212101) and next prime (64100244212141).

It is not a de Polignac number, because 64100244212121 - 2¹¹ = 64100244210073 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64100244212101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3757686 + ... + 11929823.

It is an arithmetic number, because the mean of its divisors is an integer number (3045981066660).

Almost surely, 2^{64100244212121} is an apocalyptic number.

It is an amenable number.

64100244212121 is a deficient number, since it is larger than the sum of its proper divisors (33371149920999).

64100244212121 is a wasteful number, since it uses less digits than its factorization.

64100244212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15693705.

The product of its (nonzero) digits is 6144, while the sum is 30.

Adding to 64100244212121 its reverse (12121244200146), we get a palindrome (76221488412267).

The spelling of 64100244212121 in words is "sixty-four trillion, one hundred billion, two hundred forty-four million, two hundred twelve thousand, one hundred twenty-one".