121020220201020 has 192 divisors, whose sum is σ = 387552162816000. Its totient is φ = 27641237218560.

The previous prime is 121020220200937. The next prime is 121020220201081. The reversal of 121020220201020 is 20102022020121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9127395151 + ... + 9127408409.

It is an arithmetic number, because the mean of its divisors is an integer number (2018500848000).

Almost surely, 2^{121020220201020} is an apocalyptic number.

121020220201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020220201020 is an abundant number, since it is smaller than the sum of its proper divisors (266531942614980).

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

121020220201020 is a wasteful number, since it uses less digits than its factorization.

121020220201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27768 (or 27766 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 121020220201020 its reverse (20102022020121), we get a palindrome (141122242221141).

The spelling of 121020220201020 in words is "one hundred twenty-one trillion, twenty billion, two hundred twenty million, two hundred one thousand, twenty".