10121202019 has 24 divisors (see below), whose sum is σ = 10577332080. Its totient is φ = 9680292864.

The previous prime is 10121201971. The next prime is 10121202053. The reversal of 10121202019 is 91020212101.

It is a happy number.

It is not a de Polignac number, because 10121202019 - 2⁹ = 10121201507 is a prime.

It is a super-2 number, since 2×10121202019² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10121201987 and 10121202005.

It is not an unprimeable number, because it can be changed into a prime (10121202079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73877319 + ... + 73877455.

It is an arithmetic number, because the mean of its divisors is an integer number (440722170).

Almost surely, 2^10121202019 is an apocalyptic number.

10121202019 is a deficient number, since it is larger than the sum of its proper divisors (456130061).

10121202019 is an frugal number, since it uses more digits than its factorization.

10121202019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 10121202019 in words is "ten billion, one hundred twenty-one million, two hundred two thousand, nineteen".