121210200221020 has 12 divisors (see below), whose sum is σ = 254541420464184. Its totient is φ = 48484080088400.

The previous prime is 121210200221017. The next prime is 121210200221069. The reversal of 121210200221020 is 20122002012121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121210200220985 and 121210200221003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3030255005506 + ... + 3030255005545.

It is an arithmetic number, because the mean of its divisors is an integer number (21211785038682).

Almost surely, 2^{121210200221020} is an apocalyptic number.

121210200221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121210200221020 is an abundant number, since it is smaller than the sum of its proper divisors (133331220243164).

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

121210200221020 is a wasteful number, since it uses less digits than its factorization.

121210200221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060510011060 (or 6060510011058 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121210200221020 its reverse (20122002012121), we get a palindrome (141332202233141).

The spelling of 121210200221020 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred million, two hundred twenty-one thousand, twenty".