121100021051 has 2 divisors, whose sum is σ = 121100021052. Its totient is φ = 121100021050.

The previous prime is 121100020889. The next prime is 121100021069. The reversal of 121100021051 is 150120001121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121100021051 - 2¹⁴ = 121100004667 is a prime.

It is not a weakly prime, because it can be changed into another prime (121100021351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550010525 + 60550010526.

It is an arithmetic number, because the mean of its divisors is an integer number (60550010526).

Almost surely, 2^121100021051 is an apocalyptic number.

121100021051 is a deficient number, since it is larger than the sum of its proper divisors (1).

121100021051 is an equidigital number, since it uses as much as digits as its factorization.

121100021051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 14.

Adding to 121100021051 its reverse (150120001121), we get a palindrome (271220022172).

The spelling of 121100021051 in words is "one hundred twenty-one billion, one hundred million, twenty-one thousand, fifty-one".