30420121011 has 128 divisors (see below), whose sum is σ = 53009510400. Its totient is φ = 15109079040.

The previous prime is 30420121003. The next prime is 30420121031. The reversal of 30420121011 is 11012102403.

It is not a de Polignac number, because 30420121011 - 2³ = 30420121003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30420121001) 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 127 ways as a sum of consecutive naturals, for example, 36694545 + ... + 36695373.

It is an arithmetic number, because the mean of its divisors is an integer number (414136800).

Almost surely, 2^30420121011 is an apocalyptic number.

30420121011 is a deficient number, since it is larger than the sum of its proper divisors (22589389389).

30420121011 is a wasteful number, since it uses less digits than its factorization.

30420121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 30420121011 its reverse (11012102403), we get a palindrome (41432223414).

The spelling of 30420121011 in words is "thirty billion, four hundred twenty million, one hundred twenty-one thousand, eleven".