121010220201012 has 144 divisors (see below), whose sum is σ = 307874328565440. Its totient is φ = 36889573561344.

The previous prime is 121010220201011. The next prime is 121010220201029. The reversal of 121010220201012 is 210102022010121.

It is a junction number, because it is equal to n+sod(n) for n = 121010220200982 and 121010220201000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010220201011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1157530408 + ... + 1157634944.

Almost surely, 2^{121010220201012} is an apocalyptic number.

121010220201012 is a gapful number since it is divisible by the number (12) 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 121010220201012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153937164282720).

121010220201012 is an abundant number, since it is smaller than the sum of its proper divisors (186864108364428).

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

121010220201012 is a wasteful number, since it uses less digits than its factorization.

121010220201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110658 (or 110627 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121010220201012 its reverse (210102022010121), we get a palindrome (331112242211133).

The spelling of 121010220201012 in words is "one hundred twenty-one trillion, ten billion, two hundred twenty million, two hundred one thousand, twelve".