121220212102000 has 320 divisors, whose sum is σ = 321227510123520. Its totient is φ = 43877613696000.

The previous prime is 121220212101953. The next prime is 121220212102037. The reversal of 121220212102000 is 201212022121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7944170371 + ... + 7944185629.

It is an arithmetic number, because the mean of its divisors is an integer number (1003835969136).

Almost surely, 2^{121220212102000} is an apocalyptic number.

121220212102000 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 121220212102000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160613755061760).

121220212102000 is an abundant number, since it is smaller than the sum of its proper divisors (200007298021520).

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

121220212102000 is a wasteful number, since it uses less digits than its factorization.

121220212102000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16929 (or 16913 counting only the distinct ones).

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

Adding to 121220212102000 its reverse (201212022121), we get a palindrome (121421424124121).

The spelling of 121220212102000 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred twelve million, one hundred two thousand".