20202102129 has 8 divisors (see below), whose sum is σ = 29384875872. Its totient is φ = 12243698240.

The previous prime is 20202102121. The next prime is 20202102131. The reversal of 20202102129 is 92120120202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20202102129 - 2³ = 20202102121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20202102121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306092424 + ... + 306092489.

It is an arithmetic number, because the mean of its divisors is an integer number (3673109484).

Almost surely, 2^20202102129 is an apocalyptic number.

It is an amenable number.

20202102129 is a deficient number, since it is larger than the sum of its proper divisors (9182773743).

20202102129 is a wasteful number, since it uses less digits than its factorization.

20202102129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612184927.

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 20202102129 in words is "twenty billion, two hundred two million, one hundred two thousand, one hundred twenty-nine".