121021202110 has 16 divisors (see below), whose sum is σ = 217885225536.
Its totient is φ = 48398022688.
The previous prime is 121021202089. The next prime is 121021202153. The reversal of 121021202110 is 11202120121.
It is a super-2 number, since 2×1210212021102 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
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, 1258582 + ... + 1351321.
It is an arithmetic number, because the mean of its divisors is an integer number (13617826596).
Almost surely, 2121021202110 is an apocalyptic number.
121021202110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
121021202110 is a deficient number, since it is larger than the sum of its proper divisors (96864023426).
121021202110 is a wasteful number, since it uses less digits than its factorization.
121021202110 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2614547.
The product of its (nonzero) digits is 16, while the sum is 13.
Adding to 121021202110 its reverse (11202120121), we get a palindrome (132223322231).
The spelling of 121021202110 in words is "one hundred twenty-one billion, twenty-one million, two hundred two thousand, one hundred ten".