1212021101120 has 56 divisors (see below), whose sum is σ = 2887159243704. Its totient is φ = 484634750976.

The previous prime is 1212021101107. The next prime is 1212021101143. The reversal of 1212021101120 is 211011202121.

It can be written as a sum of positive squares in 4 ways, for example, as 157094907904 + 1054926193216 = 396352^2 + 1027096^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212021101095 and 1212021101104.

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, 217964 + ... + 1572116.

Almost surely, 2^{1212021101120} is an apocalyptic number.

1212021101120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212021101120 is an abundant number, since it is smaller than the sum of its proper divisors (1675138142584).

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

1212021101120 is a wasteful number, since it uses less digits than its factorization.

1212021101120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356967 (or 1356957 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1212021101120 its reverse (211011202121), we get a palindrome (1423032303241).

The spelling of 1212021101120 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred one thousand, one hundred twenty".