10121124402 has 48 divisors (see below), whose sum is σ = 23200594560. Its totient is φ = 3179899296.

The previous prime is 10121124389. The next prime is 10121124407. The reversal of 10121124402 is 20442112101.

10121124402 is a `hidden beast` number, since 10 + 1 + 211 + 2 + 440 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (10121124407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7738 + ... + 142485.

It is an arithmetic number, because the mean of its divisors is an integer number (483345720).

Almost surely, 2^10121124402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10121124402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11600297280).

10121124402 is an abundant number, since it is smaller than the sum of its proper divisors (13079470158).

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

10121124402 is a wasteful number, since it uses less digits than its factorization.

10121124402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150447 (or 150444 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10121124402 its reverse (20442112101), we get a palindrome (30563236503).

The spelling of 10121124402 in words is "ten billion, one hundred twenty-one million, one hundred twenty-four thousand, four hundred two".