121047231 has 16 divisors (see below), whose sum is σ = 165312000. Its totient is φ = 78750528.

The previous prime is 121047221. The next prime is 121047253. The reversal of 121047231 is 132740121.

It is not a de Polignac number, because 121047231 - 2⁶ = 121047167 is a prime.

It is a super-2 number, since 2×121047231² = 29304864265534722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121047198 and 121047207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121047221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56620 + ... + 58718.

It is an arithmetic number, because the mean of its divisors is an integer number (10332000).

Almost surely, 2^121047231 is an apocalyptic number.

121047231 is a deficient number, since it is larger than the sum of its proper divisors (44264769).

121047231 is a wasteful number, since it uses less digits than its factorization.

121047231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 121047231 is about 11002.1466541762. The cubic root of 121047231 is about 494.6730909549.

Adding to 121047231 its reverse (132740121), we get a palindrome (253787352).

It can be divided in two parts, 121047 and 231, that added together give a triangular number (121278 = T₄₉₂).

The spelling of 121047231 in words is "one hundred twenty-one million, forty-seven thousand, two hundred thirty-one".