1202121123020 has 24 divisors (see below), whose sum is σ = 2527771675968. Its totient is φ = 480216579200.

The previous prime is 1202121123011. The next prime is 1202121123043. The reversal of 1202121123020 is 203211212021.

It is a self number, because there is not a number n which added to its sum of digits gives 1202121123020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39476276 + ... + 39506715.

It is an arithmetic number, because the mean of its divisors is an integer number (105323819832).

Almost surely, 2^{1202121123020} is an apocalyptic number.

1202121123020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202121123020 is an abundant number, since it is smaller than the sum of its proper divisors (1325650552948).

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

1202121123020 is a wasteful number, since it uses less digits than its factorization.

1202121123020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78983761 (or 78983759 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1202121123020 its reverse (203211212021), we get a palindrome (1405332335041).

The spelling of 1202121123020 in words is "one trillion, two hundred two billion, one hundred twenty-one million, one hundred twenty-three thousand, twenty".