1210121210020 has 24 divisors (see below), whose sum is σ = 2542447147968. Its totient is φ = 483821320800.

The previous prime is 1210121210017. The next prime is 1210121210063. The reversal of 1210121210020 is 200121210121.

It is a super-3 number, since 3×1210121210020³ (a number of 37 digits) contains 333 as substring.

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, 14154016 + ... + 14239255.

It is an arithmetic number, because the mean of its divisors is an integer number (105935297832).

Almost surely, 2^{1210121210020} is an apocalyptic number.

1210121210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210121210020 is an abundant number, since it is smaller than the sum of its proper divisors (1332325937948).

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

1210121210020 is a wasteful number, since it uses less digits than its factorization.

1210121210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28395411 (or 28395409 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1210121210020 its reverse (200121210121), we get a palindrome (1410242420141).

The spelling of 1210121210020 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, two hundred ten thousand, twenty".