102200121102020 has 24 divisors (see below), whose sum is σ = 215195643751704. Its totient is φ = 40770450452736.

The previous prime is 102200121102011. The next prime is 102200121102029. The reversal of 102200121102020 is 20201121002201.

It is an interprime number because it is at equal distance from previous prime (102200121102011) and next prime (102200121102029).

It can be written as a sum of positive squares in 4 ways, for example, as 18766986439744 + 83433134662276 = 4332088^2 + 9134174^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102200121101986 and 102200121102004.

It is not an unprimeable number, because it can be changed into a prime (102200121102029) 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, 6849866609 + ... + 6849881528.

It is an arithmetic number, because the mean of its divisors is an integer number (8966485156321).

Almost surely, 2^{102200121102020} is an apocalyptic number.

102200121102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102200121102020 is an abundant number, since it is smaller than the sum of its proper divisors (112995522649684).

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

102200121102020 is a wasteful number, since it uses less digits than its factorization.

102200121102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13699748519 (or 13699748517 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102200121102020 its reverse (20201121002201), we get a palindrome (122401242104221).

The spelling of 102200121102020 in words is "one hundred two trillion, two hundred billion, one hundred twenty-one million, one hundred two thousand, twenty".