121552029 has 8 divisors (see below), whose sum is σ = 180077120. Its totient is φ = 81034668.

The previous prime is 121552027. The next prime is 121552031. The reversal of 121552029 is 920255121.

It is an interprime number because it is at equal distance from previous prime (121552027) and next prime (121552031).

It is not a de Polignac number, because 121552029 - 2¹ = 121552027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4501927 = 121552029 / (1 + 2 + 1 + 5 + 5 + 2 + 0 + 2 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121551993 and 121552011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121552027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2250937 + ... + 2250990.

It is an arithmetic number, because the mean of its divisors is an integer number (22509640).

Almost surely, 2^121552029 is an apocalyptic number.

It is an amenable number.

121552029 is a deficient number, since it is larger than the sum of its proper divisors (58525091).

121552029 is an equidigital number, since it uses as much as digits as its factorization.

121552029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4501936 (or 4501930 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 121552029 is about 11025.0636732855. The cubic root of 121552029 is about 495.3597751763.

The spelling of 121552029 in words is "one hundred twenty-one million, five hundred fifty-two thousand, twenty-nine".