20121404034 has 16 divisors (see below), whose sum is σ = 42610032288. Its totient is φ = 6312597312.

The previous prime is 20121404027. The next prime is 20121404053. The reversal of 20121404034 is 43040412102.

It is a super-3 number, since 3×20121404034³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20121404034.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98634232 + ... + 98634435.

It is an arithmetic number, because the mean of its divisors is an integer number (2663127018).

Almost surely, 2^20121404034 is an apocalyptic number.

20121404034 is an abundant number, since it is smaller than the sum of its proper divisors (22488628254).

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

20121404034 is a wasteful number, since it uses less digits than its factorization.

20121404034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197268689.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20121404034 its reverse (43040412102), we get a palindrome (63161816136).

The spelling of 20121404034 in words is "twenty billion, one hundred twenty-one million, four hundred four thousand, thirty-four".