121120819 has 2 divisors, whose sum is σ = 121120820. Its totient is φ = 121120818.

The previous prime is 121120781. The next prime is 121120823. The reversal of 121120819 is 918021121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121120819 - 2¹³ = 121112627 is a prime.

It is a super-2 number, since 2×121120819² = 29340505590461522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121120793 and 121120802.

It is not a weakly prime, because it can be changed into another prime (121120859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560409 + 60560410.

It is an arithmetic number, because the mean of its divisors is an integer number (60560410).

Almost surely, 2^121120819 is an apocalyptic number.

121120819 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120819 is an equidigital number, since it uses as much as digits as its factorization.

121120819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 121120819 is about 11005.4904025218. The cubic root of 121120819 is about 494.7733125214.

The spelling of 121120819 in words is "one hundred twenty-one million, one hundred twenty thousand, eight hundred nineteen".