2121343402 has 32 divisors (see below), whose sum is σ = 3447194112. Its totient is φ = 975247104.

The previous prime is 2121343387. The next prime is 2121343409. The reversal of 2121343402 is 2043431212.

It is not an unprimeable number, because it can be changed into a prime (2121343409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1314348 + ... + 1315960.

It is an arithmetic number, because the mean of its divisors is an integer number (107724816).

Almost surely, 2^2121343402 is an apocalyptic number.

2121343402 is a deficient number, since it is larger than the sum of its proper divisors (1325850710).

2121343402 is a wasteful number, since it uses less digits than its factorization.

2121343402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2121343402 is about 46058.0438360120. The cubic root of 2121343402 is about 1284.9029489603.

Adding to 2121343402 its reverse (2043431212), we get a palindrome (4164774614).

The spelling of 2121343402 in words is "two billion, one hundred twenty-one million, three hundred forty-three thousand, four hundred two".