121969000 has 64 divisors (see below), whose sum is σ = 297872640. Its totient is φ = 46657600.

The previous prime is 121968967. The next prime is 121969007. The reversal of 121969000 is 969121.

It is a super-2 number, since 2×121969000² = 29752873922000000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121969000.

It is not an unprimeable number, because it can be changed into a prime (121969007) 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, 20349 + ... + 25651.

It is an arithmetic number, because the mean of its divisors is an integer number (4654260).

Almost surely, 2^121969000 is an apocalyptic number.

121969000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121969000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148936320).

121969000 is an abundant number, since it is smaller than the sum of its proper divisors (175903640).

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

121969000 is a wasteful number, since it uses less digits than its factorization.

121969000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5347 (or 5333 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 121969000 is about 11043.9576239680. The cubic root of 121969000 is about 495.9255546438.

The spelling of 121969000 in words is "one hundred twenty-one million, nine hundred sixty-nine thousand".