102011331420 has 96 divisors (see below), whose sum is σ = 324121190400. Its totient is φ = 26624227392.

The previous prime is 102011331413. The next prime is 102011331473. The reversal of 102011331420 is 24133110201.

102011331420 is a `hidden beast` number, since 1 + 0 + 201 + 13 + 31 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 102011331393 and 102011331402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1984300 + ... + 2035059.

It is an arithmetic number, because the mean of its divisors is an integer number (3376262400).

Almost surely, 2^102011331420 is an apocalyptic number.

102011331420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102011331420 is an abundant number, since it is smaller than the sum of its proper divisors (222109858980).

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

102011331420 is a wasteful number, since it uses less digits than its factorization.

102011331420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019424 (or 4019416 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 102011331420 its reverse (24133110201), we get a palindrome (126144441621).

The spelling of 102011331420 in words is "one hundred two billion, eleven million, three hundred thirty-one thousand, four hundred twenty".