121023828 has 24 divisors (see below), whose sum is σ = 313765760. Its totient is φ = 40341240.

The previous prime is 121023827. The next prime is 121023871. The reversal of 121023828 is 828320121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121023821) 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, 560188 + ... + 560403.

Almost surely, 2^121023828 is an apocalyptic number.

121023828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

121023828 is an abundant number, since it is smaller than the sum of its proper divisors (192741932).

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

121023828 is a wasteful number, since it uses less digits than its factorization.

121023828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120604 (or 1120596 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 121023828 is about 11001.0830375923. The cubic root of 121023828 is about 494.6412092384.

Adding to 121023828 its reverse (828320121), we get a palindrome (949343949).

The spelling of 121023828 in words is "one hundred twenty-one million, twenty-three thousand, eight hundred twenty-eight".