1202121211020 has 96 divisors (see below), whose sum is σ = 3515502816000. Its totient is φ = 306615216384.

The previous prime is 1202121211003. The next prime is 1202121211043. The reversal of 1202121211020 is 201121212021.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4457970 + ... + 4719929.

It is an arithmetic number, because the mean of its divisors is an integer number (36619821000).

Almost surely, 2^{1202121211020} is an apocalyptic number.

1202121211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202121211020 is an abundant number, since it is smaller than the sum of its proper divisors (2313381604980).

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

1202121211020 is a wasteful number, since it uses less digits than its factorization.

1202121211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9178007 (or 9178005 counting only the distinct ones).

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

Adding to 1202121211020 its reverse (201121212021), we get a palindrome (1403242423041).

It can be divided in two parts, 1202121 and 211020, that added together give a palindrome (1413141).

The spelling of 1202121211020 in words is "one trillion, two hundred two billion, one hundred twenty-one million, two hundred eleven thousand, twenty".