102121734404 has 24 divisors (see below), whose sum is σ = 179886016128. Its totient is φ = 50725997280.

The previous prime is 102121734401. The next prime is 102121734409. The reversal of 102121734404 is 404437121201.

It is a super-2 number, since 2×102121734404² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102121734401) 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, 1556789 + ... + 1621059.

It is an arithmetic number, because the mean of its divisors is an integer number (7495250672).

Almost surely, 2^102121734404 is an apocalyptic number.

It is an amenable number.

102121734404 is a deficient number, since it is larger than the sum of its proper divisors (77764281724).

102121734404 is a wasteful number, since it uses less digits than its factorization.

102121734404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66875 (or 66873 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

Adding to 102121734404 its reverse (404437121201), we get a palindrome (506558855605).

The spelling of 102121734404 in words is "one hundred two billion, one hundred twenty-one million, seven hundred thirty-four thousand, four hundred four".