121102021000 has 32 divisors (see below), whose sum is σ = 283378731480.
Its totient is φ = 48440808000.
The previous prime is 121102020961. The next prime is 121102021021. The reversal of 121102021000 is 120201121.
Adding to 121102021000 its reverse (120201121), we get a palindrome (121222222121).
It can be written as a sum of positive squares in 4 ways, for example, as 19775671876 + 101326349124 = 140626^2 + 318318^2
It is a Harshad number since it is a multiple of its sum of digits (10).
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60550011 + ... + 60552010.
Almost surely, 2121102021000 is an apocalyptic number.
121102021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
121102021000 is an abundant number, since it is smaller than the sum of its proper divisors (162276710480).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121102021000 is a wasteful number, since it uses less digits than its factorization.
121102021000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 121102042 (or 121102028 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 10.
The spelling of 121102021000 in words is "one hundred twenty-one billion, one hundred two million, twenty-one thousand".