2100121054 has 16 divisors (see below), whose sum is σ = 3205018080. Its totient is φ = 1031816160.

The previous prime is 2100121039. The next prime is 2100121057. The reversal of 2100121054 is 4501210012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100121057) 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, 122367 + ... + 138469.

It is an arithmetic number, because the mean of its divisors is an integer number (200313630).

Almost surely, 2^2100121054 is an apocalyptic number.

2100121054 is a deficient number, since it is larger than the sum of its proper divisors (1104897026).

2100121054 is a wasteful number, since it uses less digits than its factorization.

2100121054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17235.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2100121054 is about 45827.0777379488. The cubic root of 2100121054 is about 1280.6037707417.

Adding to 2100121054 its reverse (4501210012), we get a palindrome (6601331066).

The spelling of 2100121054 in words is "two billion, one hundred million, one hundred twenty-one thousand, fifty-four".