2111151402 has 48 divisors (see below), whose sum is σ = 4703536032. Its totient is φ = 683860320.

The previous prime is 2111151391. The next prime is 2111151403. The reversal of 2111151402 is 2041511112.

2111151402 is a `hidden beast` number, since 2 + 111 + 151 + 402 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2111151403) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 778533 + ... + 781239.

It is an arithmetic number, because the mean of its divisors is an integer number (97990334).

Almost surely, 2^2111151402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111151402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2351768016).

2111151402 is an abundant number, since it is smaller than the sum of its proper divisors (2592384630).

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

2111151402 is a wasteful number, since it uses less digits than its factorization.

2111151402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3923 (or 3920 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 2111151402 is about 45947.2676227869. The cubic root of 2111151402 is about 1282.8418714017.

Adding to 2111151402 its reverse (2041511112), we get a palindrome (4152662514).

The spelling of 2111151402 in words is "two billion, one hundred eleven million, one hundred fifty-one thousand, four hundred two".