102121332201243 has 16 divisors (see below), whose sum is σ = 155379804752160. Its totient is φ = 66240864129888.

The previous prime is 102121332201241. The next prime is 102121332201307. The reversal of 102121332201243 is 342102233121201.

102121332201243 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 213 + 3 + 2 + 201 + 243 = 666.

It is not a de Polignac number, because 102121332201243 - 2¹ = 102121332201241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (102121332201241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51111776880 + ... + 51111778877.

It is an arithmetic number, because the mean of its divisors is an integer number (9711237797010).

Almost surely, 2^{102121332201243} is an apocalyptic number.

102121332201243 is a deficient number, since it is larger than the sum of its proper divisors (53258472550917).

102121332201243 is a wasteful number, since it uses less digits than its factorization.

102121332201243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102223555803 (or 102223555797 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 102121332201243 its reverse (342102233121201), we get a palindrome (444223565322444).

The spelling of 102121332201243 in words is "one hundred two trillion, one hundred twenty-one billion, three hundred thirty-two million, two hundred one thousand, two hundred forty-three".