10198122420 has 48 divisors (see below), whose sum is σ = 28575388800. Its totient is φ = 2717533056.

The previous prime is 10198122419. The next prime is 10198122437. The reversal of 10198122420 is 2422189101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23194 + ... + 144686.

It is an arithmetic number, because the mean of its divisors is an integer number (595320600).

Almost surely, 2^10198122420 is an apocalyptic number.

10198122420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10198122420 is an abundant number, since it is smaller than the sum of its proper divisors (18377266380).

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

10198122420 is a wasteful number, since it uses less digits than its factorization.

10198122420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122904 (or 122902 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 10198122420 in words is "ten billion, one hundred ninety-eight million, one hundred twenty-two thousand, four hundred twenty".