102011001201020 has 24 divisors (see below), whose sum is σ = 219205035140784. Its totient is φ = 39855460934016.

The previous prime is 102011001200987. The next prime is 102011001201049. The reversal of 102011001201020 is 20102100110201.

It is a junction number, because it is equal to n+sod(n) for n = 102011001200992 and 102011001201010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59308720769 + ... + 59308722488.

It is an arithmetic number, because the mean of its divisors is an integer number (9133543130866).

Almost surely, 2^{102011001201020} is an apocalyptic number.

102011001201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102011001201020 is an abundant number, since it is smaller than the sum of its proper divisors (117194033939764).

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

102011001201020 is a wasteful number, since it uses less digits than its factorization.

102011001201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118617443309 (or 118617443307 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102011001201020 its reverse (20102100110201), we get a palindrome (122113101311221).

The spelling of 102011001201020 in words is "one hundred two trillion, eleven billion, one million, two hundred one thousand, twenty".