3520021112122 has 4 divisors (see below), whose sum is σ = 5280031668186. Its totient is φ = 1760010556060.

The previous prime is 3520021112107. The next prime is 3520021112129. The reversal of 3520021112122 is 2212111200253.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2766630095761 + 753391016361 = 1663319^2 + 867981^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3520021112093 and 3520021112102.

It is not an unprimeable number, because it can be changed into a prime (3520021112129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 880005278029 + ... + 880005278032.

Almost surely, 2^{3520021112122} is an apocalyptic number.

3520021112122 is a deficient number, since it is larger than the sum of its proper divisors (1760010556064).

3520021112122 is a wasteful number, since it uses less digits than its factorization.

3520021112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760010556063.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 3520021112122 its reverse (2212111200253), we get a palindrome (5732132312375).

The spelling of 3520021112122 in words is "three trillion, five hundred twenty billion, twenty-one million, one hundred twelve thousand, one hundred twenty-two".