1020002111120 has 40 divisors (see below), whose sum is σ = 2371575917760. Its totient is φ = 407988627840.

The previous prime is 1020002111113. The next prime is 1020002111123. The reversal of 1020002111120 is 211112000201.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1020002111123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2785925 + ... + 3130715.

It is an arithmetic number, because the mean of its divisors is an integer number (59289397944).

Almost surely, 2^{1020002111120} is an apocalyptic number.

1020002111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020002111120 is an abundant number, since it is smaller than the sum of its proper divisors (1351573806640).

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

1020002111120 is a wasteful number, since it uses less digits than its factorization.

1020002111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381783 (or 381777 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1020002111120 its reverse (211112000201), we get a palindrome (1231114111321).

The spelling of 1020002111120 in words is "one trillion, twenty billion, two million, one hundred eleven thousand, one hundred twenty".