129091229292 has 48 divisors (see below), whose sum is σ = 305391284352. Its totient is φ = 42433695360.

The previous prime is 129091229287. The next prime is 129091229297. The reversal of 129091229292 is 292922190921.

It is an interprime number because it is at equal distance from previous prime (129091229287) and next prime (129091229297).

It is not an unprimeable number, because it can be changed into a prime (129091229297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8074867 + ... + 8090837.

It is an arithmetic number, because the mean of its divisors is an integer number (6362318424).

Almost surely, 2^129091229292 is an apocalyptic number.

129091229292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129091229292 is an abundant number, since it is smaller than the sum of its proper divisors (176300055060).

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

129091229292 is a wasteful number, since it uses less digits than its factorization.

129091229292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25278 (or 25276 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The spelling of 129091229292 in words is "one hundred twenty-nine billion, ninety-one million, two hundred twenty-nine thousand, two hundred ninety-two".