20621052122 has 32 divisors (see below), whose sum is σ = 36334059840. Its totient is φ = 8672308480.

The previous prime is 20621052079. The next prime is 20621052163. The reversal of 20621052122 is 22125012602.

It is a super-3 number, since 3×20621052122³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445193 + ... + 489324.

It is an arithmetic number, because the mean of its divisors is an integer number (1135439370).

Almost surely, 2^20621052122 is an apocalyptic number.

20621052122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20621052122 is a deficient number, since it is larger than the sum of its proper divisors (15713007718).

20621052122 is a wasteful number, since it uses less digits than its factorization.

20621052122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934606.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 20621052122 its reverse (22125012602), we get a palindrome (42746064724).

The spelling of 20621052122 in words is "twenty billion, six hundred twenty-one million, fifty-two thousand, one hundred twenty-two".