102102222220240 has 40 divisors (see below), whose sum is σ = 258968363633568. Its totient is φ = 37128080807040.

The previous prime is 102102222220157. The next prime is 102102222220241. The reversal of 102102222220240 is 42022222201201.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×102102222220240² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102102222220241) 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, 58012625382 + ... + 58012627141.

Almost surely, 2^{102102222220240} is an apocalyptic number.

102102222220240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102102222220240 is an abundant number, since it is smaller than the sum of its proper divisors (156866141413328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102102222220240 is a wasteful number, since it uses less digits than its factorization.

102102222220240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116025252547 (or 116025252541 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 102102222220240 its reverse (42022222201201), we get a palindrome (144124444421441).

The spelling of 102102222220240 in words is "one hundred two trillion, one hundred two billion, two hundred twenty-two million, two hundred twenty thousand, two hundred forty".