1021211001120 has 144 divisors (see below), whose sum is σ = 3417170355648. Its totient is φ = 256303902720.

The previous prime is 1021211001119. The next prime is 1021211001121. The reversal of 1021211001120 is 211001121201.

It is an interprime number because it is at equal distance from previous prime (1021211001119) and next prime (1021211001121).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1021211001096 and 1021211001105.

It is not an unprimeable number, because it can be changed into a prime (1021211001121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3542116 + ... + 3819555.

It is an arithmetic number, because the mean of its divisors is an integer number (23730349692).

Almost surely, 2^{1021211001120} is an apocalyptic number.

1021211001120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021211001120 is an abundant number, since it is smaller than the sum of its proper divisors (2395959354528).

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

1021211001120 is a wasteful number, since it uses less digits than its factorization.

1021211001120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7361723 (or 7361698 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1021211001120 its reverse (211001121201), we get a palindrome (1232212122321).

The spelling of 1021211001120 in words is "one trillion, twenty-one billion, two hundred eleven million, one thousand, one hundred twenty".