120121202121102 has 192 divisors, whose sum is σ = 329002931537280. Its totient is φ = 30821998943232.

The previous prime is 120121202121097. The next prime is 120121202121187. The reversal of 120121202121102 is 201121202121021.

120121202121102 is a `hidden beast` number, since 120 + 121 + 202 + 121 + 102 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1019879488 + ... + 1019997260.

It is an arithmetic number, because the mean of its divisors is an integer number (1713556935090).

Almost surely, 2^{120121202121102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120121202121102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164501465768640).

120121202121102 is an abundant number, since it is smaller than the sum of its proper divisors (208881729416178).

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

120121202121102 is a wasteful number, since it uses less digits than its factorization.

120121202121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134667 (or 134664 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 120121202121102 its reverse (201121202121021), we get a palindrome (321242404242123).

The spelling of 120121202121102 in words is "one hundred twenty trillion, one hundred twenty-one billion, two hundred two million, one hundred twenty-one thousand, one hundred two".