121420305534 has 32 divisors (see below), whose sum is σ = 264934512000. Its totient is φ = 36791604000.

The previous prime is 121420305497. The next prime is 121420305541. The reversal of 121420305534 is 435503024121.

It is a super-2 number, since 2×121420305534² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 1119609 + ... + 1223259.

It is an arithmetic number, because the mean of its divisors is an integer number (8279203500).

Almost surely, 2^121420305534 is an apocalyptic number.

121420305534 is an abundant number, since it is smaller than the sum of its proper divisors (143514206466).

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

121420305534 is a wasteful number, since it uses less digits than its factorization.

121420305534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121416.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 121420305534 its reverse (435503024121), we get a palindrome (556923329655).

The spelling of 121420305534 in words is "one hundred twenty-one billion, four hundred twenty million, three hundred five thousand, five hundred thirty-four".