121826209402 has 16 divisors (see below), whose sum is σ = 192373594560. Its totient is φ = 57702225312.

The previous prime is 121826209367. The next prime is 121826209409. The reversal of 121826209402 is 204902628121.

It is not an unprimeable number, because it can be changed into a prime (121826209409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335278 + ... + 596710.

It is an arithmetic number, because the mean of its divisors is an integer number (12023349660).

Almost surely, 2^121826209402 is an apocalyptic number.

121826209402 is a deficient number, since it is larger than the sum of its proper divisors (70547385158).

121826209402 is a wasteful number, since it uses less digits than its factorization.

121826209402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273717.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 121826209402 in words is "one hundred twenty-one billion, eight hundred twenty-six million, two hundred nine thousand, four hundred two".